# \[43.00\] UEFN revision control + Launch Session lose authorization ~2 hours into every session ("Not authorized to access repository")

**URL:** <https://forums.unrealengine.com/t/43-00-uefn-revision-control-launch-session-lose-authorization-2-hours-into-every-session-not-authorized-to-access-repository/2853487>\
**Category:** Issues and Bug Reporting\
**Tags:** fortnite-creative, unreal-editor-for-fortnite, fortnite\
**Created:** [November 10, 2026, 6:08pm UTC](https://forums.unrealengine.com/t/43-00-uefn-revision-control-launch-session-lose-authorization-2-hours-into-every-session-not-authorized-to-access-repository/2853487 "2026-11-10T18:08:04Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Cepzy](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Cepzy](https://forums.unrealengine.com/u/Cepzy)\
**Post date:** [November 10, 2026, 6:08pm UTC](https://forums.unrealengine.com/t/43-00-uefn-revision-control-launch-session-lose-authorization-2-hours-into-every-session-not-authorized-to-access-repository/2853487/1 "2026-11-10T18:08:04Z")

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### Summary

Summary  
About 2 hours after I open UEFN, Unreal Revision Control disconnects and Launch Session fails (“Failed to upload source files”). Restarting UEFN doesn’t fix it: Lore login succeeds but the repository refuses access. It only works again after waiting several hours. This has happened in nearly every session since Nov 7.

### Please select what you are reporting on:

Unreal Editor for Fortnite

### What Type of Bug are you experiencing?

Lore

### Steps to Reproduce

1. Open my project in UEFN 43.00 with Unreal Revision Control enabled.
2. Keep working for about 2 hours.
3. Revision control disconnects and Launch Session fails with “Failed to upload source files”.
4. Restart UEFN and try to reconnect (Revision Control \> Unreal Revision Control \> Accept Settings): it fails with “Not authorized to access repository”.

### Expected Result

Revision control and session uploads stay connected when the sign-in token refreshes, or reconnect after restarting UEFN.

### Observed Result

About 2 hours into every session the project repository stops letting me in, and restarting UEFN doesn’t fix it until several hours later. Log (UTC, Nov 9; UEFN opened at 22:59 on Nov 8):  
00:58:52 [Auth] Auth token refreshed, re-logging in…  
01:01:32 Epic Connect … EOS\_EpicConnect\_TokenIsNoLongerValid  
01:06:32 LogSourceControl: Error: “Access token is invalid. Please re-authenticate.”  
01:08:24 SourceControl: Error: Not connected to remote: Not authorized to access repository  
After restarting UEFN: “Lore login succeeded”, then “identity not authorized for remote” and “Repository not found”.  
This has happened in nearly every session since Nov 7.

### Platform(s)

Windows / PC

### Upload an image

 ![Screenshot 2026-11-08 202452.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/0/3/e/03e785647b5b3c9ff01fbd2b7aefa095a7348526.png)[UEFN\_log\_revision\_control\_drop.txt](https://forums.unrealengine.com/uploads/short-url/6Yb1fx7CttFvqv1YM3BbLw1GFdj.txt) (6.84 MB)[UEFN\_log\_after\_restart.txt](https://forums.unrealengine.com/uploads/short-url/ng0k7ndQEOSKTs0GuScE8laZm9T.txt) (1.33 MB)

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**Author:** ![Flak](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/flak/32/769441_2.png) [@Flak](https://forums.unrealengine.com/u/Flak)\
**Post date:** [November 11, 2026, 11:21am UTC](https://forums.unrealengine.com/t/43-00-uefn-revision-control-launch-session-lose-authorization-2-hours-into-every-session-not-authorized-to-access-repository/2853487/2 "2026-11-11T11:21:04Z")

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Hi @Cepzy

Could you check whether the time is off on your PC? If that’s not it, could we get your logs when it happens? Thank you! See [this](https://forums.unrealengine.com/t/after-having-uefn-open-for-a-bit-it-disconnects-from-epic-servers/2849139) thread for more information.