This bug has been added to the tracker:
https://winscp.net/tracker/1623

Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.13

Error message:
Invalid access to memory.

Stack trace:
(00638E99) _bufchain_add
(008B9FD2) C5101_3
(008BC03A) ____ExceptionHandler
(008B8DF4) __ExceptionHandler
(00081D3F) ntdll.dll
(0006F8EA) ntdll.dll.KiUserExceptionDispatcher
(0063277B) _log_proxy_stderr
(0066CF0A) C2535_0
(0066CDA6) _handle_got_event
(007363D3) TSecureShell::EventSelectLoop
(00735603) TSecureShell::WaitForData
(00730795) TSecureShell::Init
(0073006A) TSecureShell::Open
(007B287F) TTerminal::Open
(006EF5FF) TTerminalThread::TerminalOpenEvent
(006EA614) TSignalThread::Execute
(000A1E83) Userinterface::C20_0
(000152C2) KERNEL32.DLL.BaseThreadInitThunk
(0005FFD7) ntdll.dll
(0005FF9F) ntdll.dll

(008BA63D) C5101_3
(008BBC17) _ReThrowException
(007308A3) TSecureShell::Init
(0073006A) TSecureShell::Open
(007B287F) TTerminal::Open
(006EF5FF) TTerminalThread::TerminalOpenEvent
(006EA614) TSignalThread::Execute
(000A1E83) Userinterface::C20_0
(000152C2) KERNEL32.DLL.BaseThreadInitThunk
(0005FFD7) ntdll.dll
(0005FF9F) ntdll.dll

(008BA63D) C5101_3
(008BBC17) _ReThrowException
(0073093E) TSecureShell::Init
(0073006A) TSecureShell::Open
(007B287F) TTerminal::Open
(006EF5FF) TTerminalThread::TerminalOpenEvent
(006EA614) TSignalThread::Execute
(000A1E83) Userinterface::C20_0
(000152C2) KERNEL32.DLL.BaseThreadInitThunk
(0005FFD7) ntdll.dll
(0005FF9F) ntdll.dll

(008BA63D) C5101_3
(008BBC17) _ReThrowException
(00730158) TSecureShell%3

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.11.3

Error message:
Invalid access to memory.

Stack trace:
(0062E079) _bufchain_add
(0089D34A) C5067_0
(0089F3B2) ____ExceptionHandler
(0089C16C) __ExceptionHandler
(00088D1F) ntdll.dll
(0006FC11) ntdll.dll.KiUserExceptionDispatcher
(0062795B) _log_proxy_stderr
(0066202A) C2503_0
(00661EC6) _handle_got_event
(0071B307) TSecureShell::EventSelectLoop
(0071B84D) TSecureShell::Idle
(00795DEB) TTerminal::Idle
(00096CA0) TTerminalManager::Idle
(00017207) TCustomScpExplorerForm::Idle
(0003DCDF) TNonVisualDataModule::DoIdle
(0003DC9C) TNonVisualDataModule::SessionIdleTimerTimer
(0037BCBC) System::Classes::_18201
(0001D0B9) USER32.dll
(00027844) USER32.dll
(0002A140) USER32.dll
(000180D7) USER32.dll
(00017C1B) USER32.dll.DispatchMessageW

(0089D9B5) C5067_0
(0089EF8F) _ReThrowException
(00096CE5) TTerminalManager::Idle
(00017207) TCustomScpExplorerForm::Idle
(0003DCDF) TNonVisualDataModule::DoIdle
(0003DC9C) TNonVisualDataModule::SessionIdleTimerTimer
(0037BCBC) System::Classes::_18201
(0001D0B9) USER32.dll
(00027844) USER32.dll
(0002A140) USER32.dll
(000180D7) USER32.dll
(00017C1B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.11.3

Error message:
Invalid access to memory.

Stack trace:
(0062E079) _bufchain_add
(0089D34A) C5067_0
(0089F3B2) ____ExceptionHandler
(0089C16C) __ExceptionHandler
(000851DF) ntdll.dll
(00073161) ntdll.dll.KiUserExceptionDispatcher
(0062795B) _log_proxy_stderr
(0066202A) C2503_0
(00661EC6) _handle_got_event
(0071B307) TSecureShell::EventSelectLoop
(0071A537) TSecureShell::WaitForData
(007156C9) TSecureShell::Init
(00714F9E) TSecureShell::Open
(00796C16) TTerminal::Open
(006E3013) TTerminalThread::TerminalOpenEvent
(006DE17C) TSignalThread::Execute
(000A0DD7) Userinterface::C20_0
(00017742) KERNEL32.DLL.BaseThreadInitThunk
(0006482B) ntdll.dll.RtlGetAppContainerNamedObjectPath
(000647F8) ntdll.dll.RtlGetAppContainerNamedObjectPath

(0089D9B5) C5067_0
(0089EF8F) _ReThrowException
(007157D7) TSecureShell::Init
(00714F9E) TSecureShell::Open
(00796C16) TTerminal::Open
(006E3013) TTerminalThread::TerminalOpenEvent
(006DE17C) TSignalThread::Execute
(000A0DD7) Userinterface::C20_0
(00017742) KERNEL32.DLL.BaseThreadInitThunk
(0006482B) ntdll.dll.RtlGetAppContainerNamedObjectPath
(000647F8) ntdll.dll.RtlGetAppContainerNamedObjectPath

(0089D9B5) C5067_0
(0089EF8F) _ReThrowException
(00715872) TSecureShell::Init
(00714F9E) TSecureShell::Open
(00796C16) TTerminal::Open
(006E3013) TTerminalThread::TerminalOpenEvent
(006DE17C) TSignalThread::Execute
(000A0DD7) Userinterface::C20_0
(00017742) KERNEL32.DLL.BaseThreadInitThunk
(0006482B) ntdll.dll.RtlGet

The problem happens rarely. I cannot reproduce it.

Every time I try to connect I get this error
WinSCP 5.11.3

Error message:
Invalid access to memory.

Stack trace:
(0062E079) _bufchain_add
(0089D34A) C5067_0
(0089F3B2) ____ExceptionHandler
(0089C16C) __ExceptionHandler
(00088D5F) ntdll.dll
(0006FC11) ntdll.dll.KiUserExceptionDispatcher
(0062795B) _log_proxy_stderr
(0066202A) C2503_0
(00661EC6) _handle_got_event
(0071B307) TSecureShell::EventSelectLoop
(0071A537) TSecureShell::WaitForData
(007156C9) TSecureShell::Init
(00714F9E) TSecureShell::Open
(00796C16) TTerminal::Open
(006E3013) TTerminalThread::TerminalOpenEvent
(006DE17C) TSignalThread::Execute
(000A0DD7) Userinterface::C20_0
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A75) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A42) ntdll.dll.RtlGetAppContainerNamedObjectPath

(0089D9B5) C5067_0
(0089EF8F) _ReThrowException
(007157D7) TSecureShell::Init
(00714F9E) TSecureShell::Open
(00796C16) TTerminal::Open
(006E3013) TTerminalThread::TerminalOpenEvent
(006DE17C) TSignalThread::Execute
(000A0DD7) Userinterface::C20_0
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A75) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A42) ntdll.dll.RtlGetAppContainerNamedObjectPath

(0089D9B5) C5067_0
(0089EF8F) _ReThrowException
(00715872) TSecureShell::Init
(00714F9E) TSecureShell::Open
(00796C16) TTerminal::Open
(006E3013) TTerminalThread::TerminalOpenEvent
(006DE17C) TSignalThread::Execute
(000A0DD7) Userinterface::C20_0
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A75) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A42) ntdll.dll.RtlGetAppContainerNamedObjectPath

(0089D9B5) C5067_0
(0089EF8F) _ReThrowException
(0071508C) TSecureShell::Open
(00796C16) TTerminal::Open
(006E3013) TTerminalThread::TerminalOpenEvent
(006DE17C) TSignalThread::Execute
(000A0DD7) Userinterface::C20_0
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A75) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A42) ntdll.dll.RtlGetAppContainerNamedObjectPath

(0089D9B5) C5067_0
(0089EF8F) _ReThrowException
(00796DAB) TTerminal::Open
(006E3013) TTerminalThread::TerminalOpenEvent
(006DE17C) TSignalThread::Execute
(000A0DD7) Userinterface::C20_0
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A75) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A42) ntdll.dll.RtlGetAppContainerNamedObjectPath

(0089D9B5) C5067_0
(0089EF8F) _ReThrowException
(00797309) TTerminal::Open
(006E3013) TTerminalThread::TerminalOpenEvent
(006DE17C) TSignalThread::Execute
(000A0DD7) Userinterface::C20_0
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A75) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A42) ntdll.dll.RtlGetAppContainerNamedObjectPath

The problem happens rarely. I cannot reproduce it.

Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>

Did nothing for an hour... Problem still exists like in previous version.

<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.11.3

Error message:
Invalid access to memory.

Stack trace:
(0062E0F7) _bufchain_add
(0089D34A) C5067_0
(0089F3B2) ____ExceptionHandler
(0089C16C) __ExceptionHandler
(00088D2F) ntdll.dll
(0006FBF1) ntdll.dll.KiUserExceptionDispatcher
(0062795B) _log_proxy_stderr
(0066202A) C2503_0
(00661EC6) _handle_got_event
(0071B307) TSecureShell::EventSelectLoop
(0071A537) TSecureShell::WaitForData
(007156C9) TSecureShell::Init
(00714F9E) TSecureShell::Open
(0075A6A7) TSFTPFileSystem::Open
(00798A47) TTerminal::Reopen
(006E3021) TTerminalThread::TerminalReopenEvent
(006DE17C) TSignalThread::Execute
(000A0DD7) Userinterface::C20_0
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A45) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A12) ntdll.dll.RtlGetAppContainerNamedObjectPath

(0089D9B5) C5067_0
(0089EF8F) _ReThrowException
(007157D7) TSecureShell::Init
(00714F9E) TSecureShell::Open
(0075A6A7) TSFTPFileSystem::Open
(00798A47) TTerminal::Reopen
(006E3021) TTerminalThread::TerminalReopenEvent
(006DE17C) TSignalThread::Execute
(000A0DD7) Userinterface::C20_0
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A45) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A12) ntdll.dll.RtlGetAppContainerNamedObjectPath

(0089D9B5) C5067_0
(0089EF8F) _ReThrowException
(00715872) TSecureShell::Init
(00714F9E) TSecureShell::Open
(0075A6A7) TSFTPFileSystem::Open
(00798A47) TTerminal::Reopen
(006E3021) TTerminalThread::TerminalReopenEvent
(006DE17C) TSignalThread::Execute
(000A0DD7) Userinterface::C20_0
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A45) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A12) ntdll.dll.RtlGetAppContainerNamedObjectPath

(0089D9B5) C5067_0
(0089EF8F) _ReThrowException
(0071508C) TSecureShell::Open
(0075A6A7) TSFTPFileSystem::Open
(00798A47) TTerminal::Reopen
(006E3021) TTerminalThread::TerminalReopenEvent
(006DE17C) TSignalThread::Execute
(000A0DD7) Userinterface::C20_0
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A45) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A12) ntdll.dll.RtlGetAppContainerNamedObjectPath

(0089D9B5) C5067_0
(0089EF8F) _ReThrowException
(00797309) TTerminal::Open
(00798A47) TTerminal::Reopen
(006E3021) TTerminalThread::TerminalReopenEvent
(006DE17C) TSignalThread::Execute
(000A0DD7) Userinterface::C20_0
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A45) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A12) ntdll.dll.RtlGetAppContainerNamedObjectPath

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

Hi, I downloaded latest debug build using link from your letter.
Just launch program and received this after ~ 1 hour during reconnect attempt.


WinSCP 5.11.3

Error message:
Invalid access to memory.

Stack trace:
(006CB01D) _bufchain_add
(00974B8E) C5079_0
(00976BF6) ____ExceptionHandler
(009739B0) __ExceptionHandler
(00088D2F) ntdll.dll
(0006FBF1) ntdll.dll.KiUserExceptionDispatcher
(006C1C76) _log_proxy_stderr
(0070CE35) C2511_0
(0070C9CE) _handle_got_event
(007E8297) TSecureShell::EventSelectLoop
(007E7498) TSecureShell::WaitForData
(007E0D59) TSecureShell::Init
(007E032D) TSecureShell::Open
(0082D871) TSFTPFileSystem::Open
(008511C3) TTerminal::Open
(008531F0) TTerminal::Reopen
(007A8B22) TTerminalThread::TerminalReopenEvent
(007A8BD8) TTerminalThread::ProcessEvent
(007A0B9A) TSignalThread::Execute
(0079FEA5) TSimpleThread::ThreadProc
(000C18DD) Userinterface::C20_0
(0044C0E8) System::_17270
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A45) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A12) ntdll.dll.RtlGetAppContainerNamedObjectPath

(009751F9) C5079_0
(009767D3) _ReThrowException
(007E0E8D) TSecureShell::Init
(007E032D) TSecureShell::Open
(0082D871) TSFTPFileSystem::Open
(008511C3) TTerminal::Open
(008531F0) TTerminal::Reopen
(007A8B22) TTerminalThread::TerminalReopenEvent
(007A8BD8) TTerminalThread::ProcessEvent
(007A0B9A) TSignalThread::Execute
(0079FEA5) TSimpleThread::ThreadProc
(000C18DD) Userinterface::C20_0
(0044C0E8) System::_17270
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A45) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A12) ntdll.dll.RtlGetAppContainerNamedObjectPath

(009751F9) C5079_0
(009767D3) _ReThrowException
(007E0F27) TSecureShell::Init
(007E032D) TSecureShell::Open
(0082D871) TSFTPFileSystem::Open
(008511C3) TTerminal::Open
(008531F0) TTerminal::Reopen
(007A8B22) TTerminalThread::TerminalReopenEvent
(007A8BD8) TTerminalThread::ProcessEvent
(007A0B9A) TSignalThread::Execute
(0079FEA5) TSimpleThread::ThreadProc
(000C18DD) Userinterface::C20_0
(0044C0E8) System::_17270
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A45) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A12) ntdll.dll.RtlGetAppContainerNamedObjectPath

(009751F9) C5079_0
(009767D3) _ReThrowException
(007E04B7) TSecureShell::Open
(0082D871) TSFTPFileSystem::Open
(008511C3) TTerminal::Open
(008531F0) TTerminal::Reopen
(007A8B22) TTerminalThread::TerminalReopenEvent
(007A8BD8) TTerminalThread::ProcessEvent
(007A0B9A) TSignalThread::Execute
(0079FEA5) TSimpleThread::ThreadProc
(000C18DD) Userinterface::C20_0
(0044C0E8) System::_17270
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A45) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A12) ntdll.dll.RtlGetAppContainerNamedObjectPath

(009751F9) C5079_0
(009767D3) _ReThrowException
(00851654) TTerminal::Open
(008531F0) TTerminal::Reopen
(007A8B22) TTerminalThread::TerminalReopenEvent
(007A8BD8) TTerminalThread::ProcessEvent
(007A0B9A) TSignalThread::Execute
(0079FEA5) TSimpleThread::ThreadProc
(000C18DD) Userinterface::C20_0
(0044C0E8) System::_17270
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A45) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A12) ntdll.dll.RtlGetAppContainerNamedObjectPath

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.11.2

Error message:
Invalid access to memory.

Stack trace:
(0062DAC5) _bufchain_add
(0089C9C2) C5067_3
(0089EA2A) ____ExceptionHandler
(0089B7E4) __ExceptionHandler
(00088D2F) ntdll.dll
(0006FBF1) ntdll.dll.KiUserExceptionDispatcher
(006273A7) _log_proxy_stderr
(00661A76) C2503_0
(00661912) _handle_got_event
(0071AD03) TSecureShell::EventSelectLoop
(00719F33) TSecureShell::WaitForData
(007150C5) TSecureShell::Init
(0071499A) TSecureShell::Open
(007963CE) TTerminal::Open
(006E2A5B) TTerminalThread::TerminalOpenEvent
(006DDBC4) TSignalThread::Execute
(000A0D93) Userinterface::C20_0
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A45) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A12) ntdll.dll.RtlGetAppContainerNamedObjectPath

(0089D02D) C5067_3
(0089E607) _ReThrowException
(007151D3) TSecureShell::Init
(0071499A) TSecureShell::Open
(007963CE) TTerminal::Open
(006E2A5B) TTerminalThread::TerminalOpenEvent
(006DDBC4) TSignalThread::Execute
(000A0D93) Userinterface::C20_0
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A45) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A12) ntdll.dll.RtlGetAppContainerNamedObjectPath

(0089D02D) C5067_3
(0089E607) _ReThrowException
(0071526E) TSecureShell::Init
(0071499A) TSecureShell::Open
(007963CE) TTerminal::Open
(006E2A5B) TTerminalThread::TerminalOpenEvent
(006DDBC4) TSignalThread::Execute
(000A0D93) Userinterface::C20_0
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A45) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A12) ntdll.dll.RtlGetAppContainerNamedObjectPath

(0089D02D) C5067_3
(0089E607) _ReThrowException
(00714A88) TSecureShell::Open
(007963CE) TTerminal::Open
(006E2A5B) TTerminalThread::TerminalOpenEvent
(006DDBC4) TSignalThread::Execute
(000A0D93) Userinterface::C20_0
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A45) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A12) ntdll.dll.RtlGetAppContainerNamedObjectPath

(0089D02D) C5067_3
(0089E607) _ReThrowException
(00796563) TTerminal::Open
(006E2A5B) TTerminalThread::TerminalOpenEvent
(006DDBC4) TSignalThread::Execute
(000A0D93) Userinterface::C20_0
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A45) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A12) ntdll.dll.RtlGetAppContainerNamedObjectPath

(0089D02D) C5067_3
(0089E607) _ReThrowException
(00796AC1) TTerminal::Open
(006E2A5B) TTerminalThread::TerminalOpenEvent
(006DDBC4) TSignalThread::Execute
(000A0D93) Userinterface::C20_0
(00017652) KERNEL32.DLL.BaseThreadInitThunk
(00063A45) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00063A12) ntdll.dll.RtlGetAppContainerNamedObjectPath

The problem happens rarely. I cannot reproduce it.

I tried to connect to a host through a Putty Proxy (ssh in ssh). During that action the network was changed (VPN access).


WinSCP 5.9.6

Error message:
Invalid access to memory.

Stack trace:
(00617035) _bufchain_add
(008689AA) C5077_0
(0086AA12) ____ExceptionHandler
(008677CC) __ExceptionHandler
(000624F6) ntdll.dll
(0000F13E) ntdll.dll.KiUserExceptionDispatcher
(006108C3) _log_proxy_stderr
(0064AF16) C2503_0
(0064ADBA) _handle_got_event
(00700BD3) TSecureShell::EventSelectLoop
(006FFE0B) TSecureShell::WaitForData
(006FB215) TSecureShell::Init
(006FAAEA) TSecureShell::Open
(00771C0A) TTerminal::Open
(006CA8A3) TTerminalThread::TerminalOpenEvent
(006C5878) TSignalThread::Execute
(00098E9B) Userinterface::C20_0
(00012368) kernel32.dll.BaseThreadInitThunk
(00038900) ntdll.dll
(000388D0) ntdll.dll

(00869015) C5077_0
(0086A5EF) _ReThrowException
(006FB323) TSecureShell::Init
(006FAAEA) TSecureShell::Open
(00771C0A) TTerminal::Open
(006CA8A3) TTerminalThread::TerminalOpenEvent
(006C5878) TSignalThread::Execute
(00098E9B) Userinterface::C20_0
(00012368) kernel32.dll.BaseThreadInitThunk
(00038900) ntdll.dll
(000388D0) ntdll.dll

(00869015) C5077_0
(0086A5EF) _ReThrowException
(006FB3BE) TSecureShell::Init
(006FAAEA) TSecureShell::Open
(00771C0A) TTerminal::Open
(006CA8A3) TTerminalThread::TerminalOpenEvent
(006C5878) TSignalThread::Execute
(00098E9B) Userinterface::C20_0
(00012368) kernel32.dll.BaseThreadInitThunk
(00038900) ntdll.dll
(000388D0) ntdll.dll

(00869015) C5077_0
(0086A5EF) _ReThrowException
(006FABD8) TSecureShell%

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.9.3

Error message:
Accès mémoire invalide.

Trace de la pile :
(006159B7) _bufchain_add
(00866422) C5073_3
(0086848A) ____ExceptionHandler
(00865244) __ExceptionHandler
(000624F6) ntdll.dll
(0000F13E) ntdll.dll.KiUserExceptionDispatcher
(0060F2EF) _log_proxy_stderr
(0064943A) C2501_0
(006492E6) _handle_got_event
(006FECF3) TSecureShell::EventSelectLoop
(006FDF2B) TSecureShell::WaitForData
(006F9335) TSecureShell::Init
(006F8C0A) TSecureShell::Open
(0076FDE2) TTerminal::Open
(006C89EF) TTerminalThread::TerminalOpenEvent
(006C39C4) TSignalThread::Execute
(00098AD3) Userinterface::C20_0
(00012368) kernel32.dll.BaseThreadInitThunk
(00038900) ntdll.dll
(000388D0) ntdll.dll

(00866A8D) C5073_3
(00868067) _ReThrowException
(006F9443) TSecureShell::Init
(006F8C0A) TSecureShell::Open
(0076FDE2) TTerminal::Open
(006C89EF) TTerminalThread::TerminalOpenEvent
(006C39C4) TSignalThread::Execute
(00098AD3) Userinterface::C20_0
(00012368) kernel32.dll.BaseThreadInitThunk
(00038900) ntdll.dll
(000388D0) ntdll.dll

(00866A8D) C5073_3
(00868067) _ReThrowException
(006F94DE) TSecureShell::Init
(006F8C0A) TSecureShell::Open
(0076FDE2) TTerminal::Open
(006C89EF) TTerminalThread::TerminalOpenEvent
(006C39C4) TSignalThread::Execute
(00098AD3) Userinterface::C20_0
(00012368) kernel32.dll.BaseThreadInitThunk
(00038900) ntdll.dll
(000388D0) ntdll.dll

(00866A8D) C5073_3
(00868067) _ReThrowException
(006F8CF8%

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.9.4

Error message:
Invalid access to memory.

Stack trace:
(00615B89) _bufchain_add
(00866B5E) C5073_0
(00868BC6) ____ExceptionHandler
(00865980) __ExceptionHandler
(0005A7EA) ntdll.dll
(0000F15E) ntdll.dll.KiUserExceptionDispatcher
(0060F53F) _log_proxy_stderr
(0064968A) C2501_0
(00649536) _handle_got_event
(006FEF43) TSecureShell::EventSelectLoop
(006FF489) TSecureShell::Idle
(0076F14F) TTerminal::Idle
(0008EEB0) TTerminalManager::Idle
(00016C9F) TCustomScpExplorerForm::Idle
(0003D017) TNonVisualDataModule::DoIdle
(0003CFD4) TNonVisualDataModule::SessionIdleTimerTimer
(0037322C) System::Classes::_18201
(000152F7) USER32.dll
(00015D35) USER32.dll
(000167CE) USER32.dll
(00016895) USER32.dll.DispatchMessageW

(008671C9) C5073_0
(008687A3) _ReThrowException
(0008EEF5) TTerminalManager::Idle
(00016C9F) TCustomScpExplorerForm::Idle
(0003D017) TNonVisualDataModule::DoIdle
(0003CFD4) TNonVisualDataModule::SessionIdleTimerTimer
(0037322C) System::Classes::_18201
(000152F7) USER32.dll
(00015D35) USER32.dll
(000167CE) USER32.dll
(00016895) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

Was working in a directory with a very huge count on files (~64k) that decreases while i was cleaning up stuff.
After I finished the clean-up I opened a second tab to create a new connection (the first one was still active)
Thats when the error occurs.

hope it helps,
regards thomas


WinSCP 5.9.3

Error message:
Zugriffsverletzung - ungültiger Zugriff auf den Speicher.

Stack trace:
(00615939) _bufchain_add
(00866422) C5073_3
(0086848A) ____ExceptionHandler
(00865244) __ExceptionHandler
(00081D3F) ntdll.dll
(0006F8EA) ntdll.dll.KiUserExceptionDispatcher
(0060F2EF) _log_proxy_stderr
(0064943A) C2501_0
(006492E6) _handle_got_event
(006FECF3) TSecureShell::EventSelectLoop
(006FF239) TSecureShell::Idle
(0076EEFF) TTerminal::Idle
(0008EE20) TTerminalManager::Idle
(00016C9F) TCustomScpExplorerForm::Idle
(0003CF87) TNonVisualDataModule::DoIdle
(0003CF44) TNonVisualDataModule::SessionIdleTimerTimer
(00373100) System::Classes::_18201
(0002C2B1) USER32.dll
(0000D885) USER32.dll
(0000D1DF) USER32.dll
(0000CF9B) USER32.dll.DispatchMessageW

(00615939) _bufchain_add
(00866422) C5073_3
(0086848A) ____ExceptionHandler
(00865244) __ExceptionHandler
(00081D3F) ntdll.dll
(0006F8EA) ntdll.dll.KiUserExceptionDispatcher
(0060F2EF) _log_proxy_stderr
(0064943A) C2501_0
(006492E6) _handle_got_event
(006FECF3) TSecureShell::EventSelectLoop
(006FF239) TSecureShell::Idle
(0076EEFF) TTerminal::Idle
(0008EE20) TTerminalManager::Idle
(00016C9F) TCustomScpExplorerForm::Idle
(0003CF87) TNonVisualDataModule::DoIdle
(0003CF44) TNonVisualDataModule::SessionIdleTimerTimer
(00373100) System::Classes::_18201
(0002C2B1) USER32.dll
(0000D885) USER32.dll
(0000D1DF) USER32.dll
(0000CF9B) USER32.dll.DispatchMessageW

(00866A8D) C5073_3
(00

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.9.3

Error message:
Invalid access to memory.

Stack trace:
(00615939) _bufchain_add
(00866422) C5073_3
(0086848A) ____ExceptionHandler
(00865244) __ExceptionHandler
(0008137F) ntdll.dll
(0006EF1A) ntdll.dll.KiUserExceptionDispatcher
(0060F2EF) _log_proxy_stderr
(0064943A) C2501_0
(006492E6) _handle_got_event
(006FECF3) TSecureShell::EventSelectLoop
(006FF239) TSecureShell::Idle
(0076EEFF) TTerminal::Idle
(0008EE20) TTerminalManager::Idle
(00016C9F) TCustomScpExplorerForm::Idle
(0003CF87) TNonVisualDataModule::DoIdle
(0003CF44) TNonVisualDataModule::SessionIdleTimerTimer
(00373100) System::Classes::_18201
(0002C271) USER32.dll
(0000D845) USER32.dll
(0000D19F) USER32.dll
(0000CF5B) USER32.dll.DispatchMessageW

(00866A8D) C5073_3
(00868067) _ReThrowException
(0008EE65) TTerminalManager::Idle
(00016C9F) TCustomScpExplorerForm::Idle
(0003CF87) TNonVisualDataModule::DoIdle
(0003CF44) TNonVisualDataModule::SessionIdleTimerTimer
(00373100) System::Classes::_18201
(0002C271) USER32.dll
(0000D845) USER32.dll
(0000D19F) USER32.dll
(0000CF5B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
I used "on university servers" session which works perfectly. Then, I created a proxy session for PuTTY and tried to use it with WINSCP home which give me that message or "Out of memory"
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.9.2

Error message:
Invalid access to memory.

Stack trace:
(00614B59) _bufchain_add
(00863846) C5073_3
(008658AE) ____ExceptionHandler
(00862668) __ExceptionHandler
(00081D3F) ntdll.dll
(0006F8EA) ntdll.dll.KiUserExceptionDispatcher
(0060E50F) _log_proxy_stderr
(0064865A) C2501_0
(00648506) _handle_got_event
(006FCC33) TSecureShell::EventSelectLoop
(006FBE6B) TSecureShell::WaitForData
(006F7275) TSecureShell::Init
(006F6B4A) TSecureShell::Open
(0076D91E) TTerminal::Open
(006C6A1F) TTerminalThread::TerminalOpenEvent
(006C19F4) TSignalThread::Execute
(000987A7) Userinterface::C20_0
(000152C2) KERNEL32.DLL.BaseThreadInitThunk
(0005FFD7) ntdll.dll
(0005FF9F) ntdll.dll

(00863EB1) C5073_3
(0086548B) _ReThrowException
(006F7383) TSecureShell::Init
(006F6B4A) TSecureShell::Open
(0076D91E) TTerminal::Open
(006C6A1F) TTerminalThread::TerminalOpenEvent
(006C19F4) TSignalThread::Execute
(000987A7) Userinterface::C20_0
(000152C2) KERNEL32.DLL.BaseThreadInitThunk
(0005FFD7) ntdll.dll
(0005FF9F) ntdll.dll

(00863EB1) C5073_3
(0086548B) _ReThrowException
(006F741E) TSecureShell::Init
(006F6B4A) TSecureShell::Open
(0076D91E) TTerminal::Open
(006C6A1F) TTerminalThread::TerminalOpenEvent
(006C19F4) TSignalThread::Execute
(000987A7) Userinterface::C20_0
(000152C2) KERNEL32.DLL.BaseThreadInitThunk
(0005FFD7) ntdll.dll
(0005FF9F) ntdll.dll

(00863EB1) C5073_3
(0086548B) _ReThrowException
(006F6C38) TSecureShell%

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

I'm just trying to connect using stored (and previously working) session

WinSCP 5.9.3

Error message:
Invalid access to memory.

Stack trace:
(00615939) _bufchain_add
(00866422) C5073_3
(0086848A) ____ExceptionHandler
(00865244) __ExceptionHandler
(00062496) ntdll.dll
(0000F13E) ntdll.dll.KiUserExceptionDispatcher
(0060F2EF) _log_proxy_stderr
(0064943A) C2501_0
(006492E6) _handle_got_event
(006FECF3) TSecureShell::EventSelectLoop
(006FDF2B) TSecureShell::WaitForData
(006F9335) TSecureShell::Init
(006F8C0A) TSecureShell::Open
(0076FDE2) TTerminal::Open
(006C89EF) TTerminalThread::TerminalOpenEvent
(006C39C4) TSignalThread::Execute
(00098AD3) Userinterface::C20_0
(00012368) kernel32.dll.BaseThreadInitThunk
(00038900) ntdll.dll
(000388D0) ntdll.dll

(00866A8D) C5073_3
(00868067) _ReThrowException
(006F9443) TSecureShell::Init
(006F8C0A) TSecureShell::Open
(0076FDE2) TTerminal::Open
(006C89EF) TTerminalThread::TerminalOpenEvent
(006C39C4) TSignalThread::Execute
(00098AD3) Userinterface::C20_0
(00012368) kernel32.dll.BaseThreadInitThunk
(00038900) ntdll.dll
(000388D0) ntdll.dll

(00866A8D) C5073_3
(00868067) _ReThrowException
(006F94DE) TSecureShell::Init
(006F8C0A) TSecureShell::Open
(0076FDE2) TTerminal::Open
(006C89EF) TTerminalThread::TerminalOpenEvent
(006C39C4) TSignalThread::Execute
(00098AD3) Userinterface::C20_0
(00012368) kernel32.dll.BaseThreadInitThunk
(00038900) ntdll.dll
(000388D0) ntdll.dll

(00866A8D) C5073_3
(00868067) _ReThrowException
(006F8CF8) TSecureShell%

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.9.2

Error message:
Invalid access to memory.

Stack trace:
(00614B59) _bufchain_add
(00863846) C5073_3
(008658AE) ____ExceptionHandler
(00862668) __ExceptionHandler
(00062496) ntdll.dll
(0000F13E) ntdll.dll.KiUserExceptionDispatcher
(0060E50F) _log_proxy_stderr
(0064865A) C2501_0
(00648506) _handle_got_event
(006FCC33) TSecureShell::EventSelectLoop
(006FBE6B) TSecureShell::WaitForData
(006F7275) TSecureShell::Init
(006F6B4A) TSecureShell::Open
(0076D91E) TTerminal::Open
(006C6A1F) TTerminalThread::TerminalOpenEvent
(006C19F4) TSignalThread::Execute
(000987A7) Userinterface::C20_0
(00012368) kernel32.dll.BaseThreadInitThunk
(00038900) ntdll.dll
(000388D0) ntdll.dll

(00863EB1) C5073_3
(0086548B) _ReThrowException
(006F7383) TSecureShell::Init
(006F6B4A) TSecureShell::Open
(0076D91E) TTerminal::Open
(006C6A1F) TTerminalThread::TerminalOpenEvent
(006C19F4) TSignalThread::Execute
(000987A7) Userinterface::C20_0
(00012368) kernel32.dll.BaseThreadInitThunk
(00038900) ntdll.dll
(000388D0) ntdll.dll

(00863EB1) C5073_3
(0086548B) _ReThrowException
(006F741E) TSecureShell::Init
(006F6B4A) TSecureShell::Open
(0076D91E) TTerminal::Open
(006C6A1F) TTerminalThread::TerminalOpenEvent
(006C19F4) TSignalThread::Execute
(000987A7) Userinterface::C20_0
(00012368) kernel32.dll.BaseThreadInitThunk
(00038900) ntdll.dll
(000388D0) ntdll.dll

(00863EB1) C5073_3
(0086548B) _ReThrowException
(006F6C38) TSecureShell%

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

When I try to move large files to my computer using WINscp

WinSCP 5.9.2

Error message:
Invalid access to memory.

Stack trace:
(00614B59) _bufchain_add
(00863846) C5073_3
(008658AE) ____ExceptionHandler
(00862668) __ExceptionHandler
(00062496) ntdll.dll
(0000F13E) ntdll.dll.KiUserExceptionDispatcher
(0060E50F) _log_proxy_stderr
(0064865A) C2501_0
(00648506) _handle_got_event
(006FCC33) TSecureShell::EventSelectLoop
(006FBE6B) TSecureShell::WaitForData
(006F7275) TSecureShell::Init
(006F6B4A) TSecureShell::Open
(0076EE82) TTerminal::OpenTunnel
(0076D536) TTerminal::Open
(0076F49F) TTerminal::Reopen
(00771079) TTerminal::QueryReopen
(0076B485) TRobustOperationLoop::TryReopen
(00760C25) TSFTPFileSystem::SFTPSinkRobust
(007609E2) TSFTPFileSystem::CopyToLocal
(007856B5) TTerminal::CopyToLocal
(0000DCC2) TCustomScpExplorerForm::ExecuteFileOperation
(0000E91C) TCustomScpExplorerForm::ExecuteFileOperation
(0001D63F) TCustomScpExplorerForm::RemoteFileControlFileOperation
(0001D99C) TCustomScpExplorerForm::RemoteFileControlDDEnd
(00408B22) Customdirview::TCustomDirView::DDDragDetect
(00655392) TUnixDirView::DDDragDetect
(00404F84) Customdirview::TCustomDirView::CNNotify
(0024A0E5) Vcl::Controls::TControl::WndProc
(0024EC29) Vcl::Controls::TWinControl::WndProc
(00292B57) Vcl::Comctrls::TCustomListView::WndProc
(0024ED8F) Vcl::Controls::_17076
(0024EC29) Vcl::Controls::TWinControl::WndProc
(0024E270) Vcl::Controls::TWinControl::MainWndProc
(00372BEC) System::Classes::_18201
(000152F7) USER32.dll
%2

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.8.2

Error message:
Invalid access to memory.

Stack trace:
(005FBE89) _bufchain_add
(0084095E) C5073_3
(008429C6) ____ExceptionHandler
(0083F940) __ExceptionHandler
(0003EE3E) ntdll.dll.ZwWow64CallFunction64
(0003F5BA) ntdll.dll.KiUserExceptionDispatcher
(005F583F) _log_proxy_stderr
(0062F6A6) C2501_0
(0062F552) _handle_got_event
(006E1E7A) TSecureShell::EventSelectLoop
(006E21BD) TSecureShell::Idle
(00751487) TTerminal::Idle
(006AC582) TTerminalThread::WaitForUserAction
(006AC74D) TTerminalThread::TerminalInformation
(00754F02) TTerminal::DoInformation
(0075500A) TTerminal::Information
(00719547) TSFTPFileSystem::Open
(00753C6F) TTerminal::Reopen
(006AC36D) TTerminalThread::TerminalReopenEvent
(006A7334) TSignalThread::Execute
(00094477) Userinterface::C20_0
(00016C02) KERNEL32.DLL.BaseThreadInitThunk
(00059B8D) ntdll.dll
(00059B55) ntdll.dll

(00840FC9) C5073_3
(008424FC) _ThrowExceptionLDTC
(0066D894) RethrowException
(006AC409) TTerminalThread::Rethrow
(006AC650) TTerminalThread::WaitForUserAction
(006AC74D) TTerminalThread::TerminalInformation
(00754F02) TTerminal::DoInformation
(0075500A) TTerminal::Information
(00719547) TSFTPFileSystem::Open
(00753C6F) TTerminal::Reopen
(006AC36D) TTerminalThread::TerminalReopenEvent
(006A7334) TSignalThread::Execute
(00094477) Userinterface::C20_0
(00016C02) KERNEL32.DLL.BaseThreadInitThunk
(00059B8D) ntdll.dll
(00059B55) ntdll.dll

(00840FC9) C5073_3
(008425A3) _ReThrowExceptio

The problem happens rarely. I cannot reproduce it.