URC Crashes & "Failed to Connect & Disabled"

Summary

Unreal Revision control fails to connect – Fully goes through the loading process, but cannot create a new snapshot OR crashes UEFN halfway through loading snapshot.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Unreal Revision Control

Steps to Reproduce

  1. Enable Unreal Revision Control
  2. Push changes
  3. Create a new URC snapshot

Expected Result

A new URC snapshot is created successfully

Observed Result

UEFN crashes OR “Failed to connect to revision control”, “Revision control is disabled”

Platform(s)

PC

Island Code

2046-2067-4753

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Additional Notes

It states “revision control is disabled” even after it is clearly enabled.

This is because it’s initially disabled on editor launch. I can see it saying Connected to “Egypt”later on in your log - which is the expected behavior.

The crash obviously is not - looking into that.

I can confirm the crash from the logs you provided to Garren.

[2026.02.03-16.21.11:211][522]LogWindows: Error: appError called: Fatal error: [File:Z:\UEVFS\Root\Engine\Source\Runtime\Core\Private\GenericPlatform\GenericPlatformMemory.cpp] [Line: 269]
Ran out of memory allocating 19299004 (18.4 MiB) bytes with alignment 0. Last error msg: The paging file is too small for this operation to complete..

Your system is running out of memory.

Please try:

  • Closing all other memory intensive applications.
  • Increasing the system paging size in your Operating System settings.
  • Increasing the amount of free disk space on your C:\ drive to allow more room for a dynamically growing paging file.
  • Install more RAM into your machine.

Confirming that we got @Bl_nd sorted out now after regenerating the project’s URC folder. The project had been stuck for the last few months hitting an error we’d since fixed.

FORT-1050538 is ‘Closed’ as ‘Fixed’. The issue will be addressed in 39.00.