DCS does not start anymore

[TheBiggerBass]

Started DCS a few hours ago without isssues. Without any changes or updates since last succesful start of DCS today, DCS suddenly fails to start now with this error message (full dcs.log attached):

2025-11-05 22:52:47.894 ERROR   ASYNCNET (Main): HTTP request dcs:logout failed with error 99: Unrecoverable error in select/poll
2025-11-05 22:52:47.894 ERROR   ASYNCNET (Main): Logout failed: -99
=== Log closed.

DCS launcher starts but DCSstops with the error message above.

How to fix that?

dcs.log

[razo+r]

Have you made any changes to your mods before it stopped working?

Have you already tried removing all mods, run a repair and see if that fixes your issue?

If not, try renaming your saved games folder.

If yes, add one mod after another to see which one causes issues.

[rob10]

Wow, you've got a lot of mods installed and it appears you're getting bunch of errors on them.  I'd start with removing them, if only reduce the clutter in the log.

[TheBiggerBass]

vor 5 Minuten schrieb razo+r:

Have you made any changes to your mods before it stopped working?

Have you already tried removing all mods, run a repair and see if that fixes your issue?

If not, try renaming your saved games folder.

If yes, add one mod after another to see which one causes issues.

vor 6 Minuten schrieb rob10:

Wow, you've got a lot of mods installed and it appears you're getting bunch of errors on them.  I'd start with removing them, if only reduce the clutter in the log.

Well, this morning DCS started as usual. Without applying any other changes it does not start anymore now. I wonder what has changed.

[rob10]

Something got changed in a file somewhere (DCS or even in Windows).  Some part in your computer finally started failing or failed just enough that it can't keep up any longer.  Who knows.  Regardless, with that many mods (or really with any), the most prudent 1st step in troubleshooting is remove them all and do a repair on your DCS.  It's really not worth spending a lot of time troubleshooting until you do that.

Edited 7 hours ago by rob10

[TheBiggerBass]

Ok, starting with a new Saved Games/DCS folder fixed started DCS.

However, I did not change a single file or setting since this morning and DCS does not start anymore. Something external must have changed.

[sleighzy]

Same log error in logs as user who reported game wouldn't start for them earlier today. Removed their mods and worked. Not sure if anything related between these two re: common mods.