Powershell : Could not load file or assembly winscp.dll :: Support Forum

Thebib Guest

Powershell : Could not load file or assembly winscp.dll

2013-01-10 09:56

Hi to all and happy new year !

I have to create a powershell script to automate file transfer.

To load winscp I try this command :

[Reflection.Assembly]::LoadFrom("winscp\WinSCP.dll") | Out-Null

But I'm getting this error :

Could not load file or assembly 'file:///winscp\WinSCP.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515)

I check winscp.dll file properties and unblock the file.

Thanks for your help.

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leemerrill
Joined:: 2013-01-16
Posts:: 1
Location:: United States

LoadFrom path

2013-01-16 20:15

TheBbib

Try this.

[Reflection.Assembly]::LoadFrom("\\c:\Program Files (x86)\WinSCP\WinSCP.dll") | Out-Null

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Guest

Possible rights

2013-05-10 01:52

right click DLL and make sure there is no Security block

not sure if this is needed (I renamed WINSCP.dll -> WINSCPnet.dll) - run -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe WINSCPnet.DLL /codebase /tlb

be sure your script is running with admin level rights

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nollmr
Joined:: 2013-09-19
Posts:: 1

2013-09-19 18:42

Just wanted to say this worked for me and add a few details. When I first tried to register the assembly I received the same error as above:

Could not load file or assembly 'file:///<path>\WinSCP.dll' or one of its dependencies. Operation is not supported.

I right-clicked on the WinSCP.dll file and chose Properties. There was an "Unblock" button on the General tab so I clicked it and hit Ok.
From a command window run as Administrator, I registered the assembly and it then worked.

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe WINSCP.DLL /codebase /tlb

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 35,454
Location:: Prague, Czechia

Re: Powershell : Could not load file or assembly winscp.dll

2013-09-23

Thanks you for sharing the details. I have documented this on:
https://winscp.net/eng/docs/message_net_operation_not_supported

But anyway, I was able to register even a blocked assembly on Windows 8. What version of Windows are you using?

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AeroX Guest

2014-01-31 16:41

If the .NET DLL is in the same directory as your PowerShell script you can load it using the below method instead of registering the assembly.

$ScriptPath = $(Split-Path -Parent $MyInvocation.MyCommand.Definition)
[Reflection.Assembly]::LoadFrom( $(Join-Path $ScriptPath "WinSCPnet.dll") ) | Out-Null

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 35,454
Location:: Prague, Czechia

2014-02-03

AeroX wrote:
If the .NET DLL is in the same directory as your PowerShell script you can load it using the below method instead of registering the assembly.
$ScriptPath = $(Split-Path -Parent $MyInvocation.MyCommand.Definition)
[Reflection.Assembly]::LoadFrom( $(Join-Path $ScriptPath "WinSCPnet.dll") ) | Out-Null

You never need to register the assembly to load it to PowerShell.

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Guest

.NET and PowerShell directory not in sync

2014-05-01 10:18

Hi there!

If you changed the directory within the PowerShell session, the current .NET directory might be different.

You can sync the two worlds with the following command:

[Environment]::CurrentDirectory = (Get-Location -PSProvider FileSystem).ProviderPath

This way you can use relative filename

[Reflection.Assembly]::LoadFrom("WinSCPnet.dll")

@Martin: Thanks for this fantastic piece of software!

-Bruno.

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Johan Nieuwhoff Guest

Re: Powershell : Could not load file or assembly winscp.dll

2014-06-19 17:04

martin wrote:

Thanks you for sharing the details. I have documented this on:
https://winscp.net/eng/docs/message_net_operation_not_supported

But anyway, I was able to register even a blocked assembly on Windows 8. What version of Windows are you using?

That's because Windows 8 is loaded with powershell 3.0. I found out that powershell 1.0 is not able to handle it. It also might be something with .Net 4.5 (which is required for powershell 3.0).
So, make sure u are using the latest powershell

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Johan Nieuwhoff Guest

Re: Powershell : Could not load file or assembly winscp.dll

2014-06-19 17:06

Johan Nieuwhoff wrote:

That's because Windows 8 is loaded with powershell 3.0. I found out that powershell 1.0 is not able to handle it. It also might be something with .Net 4.5 (which is required for powershell 3.0).
So, make sure u are using the latest powershell

btw:
I was able to load the WinSCP dll with:

Add-Type -Path "\\pathtodll\WinSCPnet.dll"

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namerg Guest

Not able to load winscp*.dll

2014-07-16 17:50

Hello, two things:

1. When i load winSCP.dll and execute a powershell script i get the following error as a windows pop up: Incompatible external console protocol version 5. I am loading the dll as

[Reflection.Assembly]::LoadFrom("C:\Program Files (x86)\WinSCP\WinSCP.dll") | Out-Null

and in the command prompt i get the following error message: WinSCP process terminated with exit code 0 and output "", without creating a log file.

2. When i load the WinSCPnet.dll and execute a powershell script i get the following message error in the command prompt:
[quote]Could not load file or assembly 'file:///C:\Program Files (x86)\WinSCP\WinSCPnet.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515)[/quote.
I am loading the dll as

[Reflection.Assembly]::LoadFrom("C:\Program Files (x86)\WinSCP\WinSCPnet.dll") | Out-Null

or

Add-Type -Path "C:\Program Files (x86)\WinSCP\WinSCPnet.dll"

Thanks for your help,

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namerg Guest

Not able to load winscp*.dll

2014-07-16 22:49

I am all set. Thanks....

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 35,454
Location:: Prague, Czechia

Re: Not able to load winscp*.dll

2014-07-18

namerg wrote:

1. When i load winSCP.dll and execute a powershell script i get the following error as a windows pop up: Incompatible external console protocol version 5.

You need to use the same version of WinSCP .NET assembly and WinSCP.

2. When i load the WinSCPnet.dll and execute a powershell script i get the following message error in the command prompt: Could not load file or assembly 'file:///C:\Program Files (x86)\WinSCP\WinSCPnet.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515).

See https://winscp.net/eng/docs/message_net_operation_not_supported

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Nathan_McPherson
Joined:: 2015-06-27
Posts:: 1

Add-Type : Could not load file or assembly

2015-06-27 15:05

PROBLEM:
I am not able to add the WinSCPnet.dll type to my PowerShell script and would appreciate any advice you could offer to help me resolve this issue. Based on a review of the other posts in this forum, I have removed the block on WinSCPnet.dll in Windows Explorer and I have ensured WinSCP.exe is located in the same folder as the DLL.

MY CODE:

Add-Type -Path "C:\Program Files (x86)\WinSCP\WINSCP.NET\WinSCPnet.dll"

ERRROR:

Add-Type : Could not load file or assembly 'file:///C:\Program Files
(x86)\WinSCP\WINSCP.NET\WinSCPnet.dll' or one of its dependencies. Operation is not supported.
(Exception from HRESULT: 0x80131515)

FWIW, I was able to create a C# console application that included a reference to "C:\Program Files (x86)\WinSCP\WINSCP.NET\WinSCPnet.dll" after I manually added WiNSCP.exe to the project. This test leads me to believe my problem my be unique PowerShell. But, I'm not sure what else to check.

UPDATE:
I was able to resolve this problem by using a utility called "Streams" from Microsoft's SYSINTERNALS to permanently unblock these two files. This seems a bit extreme; however, it resolved my problem.

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martin◆ Site Admin

Re: Add-Type : Could not load file or assembly

2015-07-03

Thanks for sharing your solution.

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perry99 Guest

Re: Add-Type : Could not load file or assembly

2015-09-03 13:55

Well, for me worked to create two files
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe.config
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe.config
with content:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
   <runtime>
      <loadFromRemoteSources enabled="true"/>
   </runtime>
</configuration>

For some reason powershell thinks, the DLL is remote, even if it is on a local drive, and I didn't find a way to "unblock" the specific file.

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 35,454
Location:: Prague, Czechia

Re: Add-Type : Could not load file or assembly

2015-09-04

perry99 wrote:

For some reason powershell thinks, the DLL is remote, even if it is on a local drive, and I didn't find a way to "unblock" the specific file.

As already suggested above, see
https://winscp.net/eng/docs/message_net_operation_not_supported

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FilipHeens Guest

Found another solution

2015-10-12 10:24

Hi This eventually helped me to run the winscp via powershell :D

https://fczaja.blogspot.com/2012/06/add-pssnapin-cannot-load-windows.html

hope this helps someone

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GreenLion Guest

2016-03-03 14:26

hi guys,

i ran into the same prolbem and solved it with another approach.

mainly i found out that with VS 2013 (Powershell extension from codeplex) is not very near to the native Powershell enviroment.
so i had to load the assembly differently foreach enviroment.

i handled it like so:

$setDevEnviromentVS = $true
#Load WinSCP assembly according DEV Enviroment
if($setDevEnviromentVS)
{
    [System.Reflection.Assembly]::LoadFrom('.\_components\winscp572\WinSCPnet.dll')
}
else
{
    Add-Type -Path '\\<UNC>Apps\winscp572\WinSCPnet.dll'
}

so with this code - you can run the script either from VS or from ISE.

HTH

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Guest

2016-03-07 11:14

hi, experts

I was trying to execute from network drive and kept on getting this error.
I none of the above solution did not work for me, although from your coding, I just changed it to

[System.Reflection.Assembly]::UnsafeLoadFrom('.\_components\winscp572\WinSCPnet.dll')

This UnsafeLoadFrom did the trick for me.
below is the copy from MSDN.

If an application has been copied from the web, it is flagged by Windows as being a web application, even if it resides on the local computer. You can change that designation by changing the file properties, or you can use the <loadFromRemoteSources> element to grant the assembly full trust. As an alternative, you can use the UnsafeLoadFrom method to load a local assembly that the operating system has flagged as having been loaded from the web.

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 35,454
Location:: Prague, Czechia

2016-03-10

Anonymous wrote:
I was trying to execute from network drive and kept on getting this error.
I none of the above solution did not work for me, although from your coding, I just changed it to
[System.Reflection.Assembly]::UnsafeLoadFrom('.\_components\winscp572\WinSCPnet.dll')
...

This is covered here:
https://winscp.net/eng/docs/message_net_operation_not_supported

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Guest

2016-04-22 11:37

martin wrote:

This is covered here:
https://winscp.net/eng/docs/message_net_operation_not_supported

Working with multiple machines I had downloaded WinSCP .NET assembly from one and extracted files on other. I guess because of this windows did not react to "Unblock" (this option would not disapear). So I downloaded assembly form the same machine and for those files unblock worked with the first time.

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Vaibhav Guest

Re: Powershell : Could not load file or assembly winscp.dll

2020-01-28 13:55

I am not able to load using

Add-Type -Path "\\pathtodll\WinSCPnet.dll"

Please help.

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 35,454
Location:: Prague, Czechia

Re: Powershell : Could not load file or assembly winscp.dll

2020-01-31

Vaibhav wrote:
I am not able to load using
Add-Type -Path "\\pathtodll\WinSCPnet.dll"
Please help.

You will have to tell us a way more information, if you want our help.

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Powershell : Could not load file or assembly winscp.dll