Disconnections :: Support Forum

Lukas31
Joined:: 2026-01-04
Posts:: 7

Disconnections

2026-01-04 21:14

The connection to the server is unstable. WinSCP repeatedly loses the connection when opening files or switching directories. Disconnects occur at irregular intervals, ranging from approximately 5 seconds up to 10 minutes.

Screenshot_99.png (15.23 KB)

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 42,640
Location:: Prague, Czechia

Re: Disconnections

2026-01-06

Thanks for your report. Do you have any reason to believe that it's WinSCP's problem? Did you try other SFTP clients? Don't they lose the connection too?

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Lukas31

Re: Disconnections

2026-01-07 13:31

Yes, unfortunately it also occurs there, but not as often and persistently as with WinSCP.

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martin◆ Site Admin

Re: Disconnections

2026-01-08

Please post logs from both.

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Lukas31

2026-01-10 18:29

If only I knew where to find them

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martin◆ Site Admin

2026-01-12

In WinSCP: https://winscp.net/eng/docs/ui_pref_logging
I do not know what other SFTP client did you try, so I cannot help with it.

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Lukas31

2026-01-18 17:33

And how can I send them the log?

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martin◆ Site Admin

2026-01-19

@Lukas31: Please attach it to a post here.

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Lukas31

2026-01-20 17:02

Yes, but where can I find this file?

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martin◆ Site Admin

2026-01-22

My post above links to a documentation that shows how to configure logging, including log file location.

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Lukas31

2026-01-22 09:09

Yes, but the location does not exist

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Lukas31
Joined:: 2026-01-04
Posts:: 7

2026-01-22 13:07

Here:

VI-Tube.log (29.16 KB, Private file)

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 42,640
Location:: Prague, Czechia

2026-01-26

Thanks. But what about the log from the other client?

Also, in this case the disconnect came after almost an hour of inactivity. No surprise there. If you need to keep the connection alive all the time, try enabling keepalives:
https://winscp.net/eng/docs/ui_login_connection

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