VBA (Access) file upload error: Unable to get local issuer certificate :: Support Forum

dbWizard
Joined:: 2016-05-27
Posts:: 10

VBA (Access) file upload error: Unable to get local issuer certificate

2019-04-17 19:22

I am attempting to run an upload of .txt files from a folder on my computer to my websits /downloads/test folder, via VBA

I have created a subroutine which builds my script and attempts to run it with the following commands:

Dim objShell as object

set objShell = CreateObject("WScript.Shell")
objShell.Run """" & ftpClientApp & """" & " /log=""" & logFile & """" & " /script=""" & scriptFile & """"

'all of that crap converts to:

"C:\Program Files (x86)\WinSCP\WinSCP.exe" /log="C:\Work\ClientFolder\ScriptOutput\WinSCP.log" /script="C:\Work\ClientFolder\ScriptOutput\rad90DD9.tmp"

and the script file looks like:

open ftp://UID:PWD@HostName/ -Explicit
# Change the remote directory
cd /Downloads/Test
# Change the local directory
lcd C:\Work\ClientFolder\SendFiles
# Upload all .txt files from the ftpLocalDir to ftpRemoteDir
put *.txt 
Exit

But I'm getting an error during this process:
Summary: Unable to get local issuer certificate

WinSCP_Sanitized.log (4.54 KB)

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 40,602
Location:: Prague, Czechia

Re: VBA (Access) file upload error: Unable to get local issuer certificate

2019-04-18

It looks like the server's certificate is not valid.
If you still trust the server, you can use -certificate switch to override that:

open ... -certificate=16:f9:d6:6e:ab:d7:95:4b:ff:c6:ce:b2:c6:8e:22:50:cb:70:7b:61

https://winscp.net/eng/docs/scriptcommand_open#certificate
https://winscp.net/eng/docs/scripting#hostkey

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dale@... Guest

Certificate

2019-04-18 15:53

Would I post that specific string of characters, behind the -Certificate argument?

I also noticed, in one of the links you provided, that the -explicit argument is only for use with FTPS protocol, and in this version of the code I'm working on simple FTP, although I will be switching to SFTP or FTPS once I get the simple FTP version working.

When I removed that argument from the code, it looks like I was able to connect, but received another error:

< 2019-04-18 10:48:19.320 Script: /UID/Downloads/Test
> 2019-04-18 10:48:19.320 Script: lcd C:\Work\ClientFolder\SendFiles
< 2019-04-18 10:48:19.506 Script: Too many parameters for command 'lcd'.
. 2019-04-18 10:48:19.507 Script: Failed
. 2019-04-18 10:48:19.507 Script: Exit code: 1
. 2019-04-18 10:48:19.515 Disconnected from server

Note: "ClientFolder" represents a folder that looks like: "\Client Name\2019-04 SFTP\" which does include a space in the first name

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