Incorrect MAC received on packet Errors in Versions 6.1–6.3 :: Support Forum

ajch1997
Joined:: 2024-06-27
Posts:: 4
Location:: Ecuador

Incorrect MAC received on packet Errors in Versions 6.1–6.3

2024-06-27 22:45

Hi, every one.
I had WinSCP version 5.27 on a Windows server that connects to Linux servers, however when I update to any version from 6.1 to 6.3.4 it gives me problems and it doesn't let me connect and I get an error indicating that "Incorrect MAC received on packet". After reverting to version 5.27, it works normally again.
Please could you tell me how I can solve this error or what it is caused by?

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 41,041
Location:: Prague, Czechia

Re: Incorrect MAC received on packet Errors in Versions 6.1–6.3

2024-06-30

There's no WinSCP 5.27. Do you mean 5.2.7?
Please post session log files both from WinSCP 5.2.7 and the latest version.

To generate the session log file, enable logging, log in to your server and do the operation and only the operation that causes the error. Submit the log with your post as an attachment. Note that passwords and passphrases not stored in the log. You may want to remove other data you consider sensitive though, such as host names, IP addresses, account names or file names (unless they are relevant to the problem). If you do not want to post the log publicly, you can mark the attachment as private.

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