Windows 11's latest feature update, version 24H2, has introduced unexpected compatibility issues for gamers using Ubisoft titles, sparking frustration across the gaming community. The update, which began rolling out to users in late 2024, appears to conflict with several popular Ubisoft games, including Assassin's Creed Valhalla, Far Cry 6, and Rainbow Six Siege.
The Scope of the Problem
Reports from multiple gaming forums and Microsoft's own support channels indicate that the 24H2 update is causing:
- Frequent game crashes during gameplay
- Reduced frame rates and stuttering
- Anti-cheat system failures in multiplayer titles
- Corrupted save files in some single-player games
Ubisoft Connect, the company's gaming platform, has also been affected, with users experiencing login failures and synchronization problems with cloud saves.
Microsoft and Ubisoft Respond
Both companies have acknowledged the issues:
Microsoft's statement:
"We're aware of reports about compatibility issues between Windows 11 24H2 and certain gaming applications. Our teams are working with partners to investigate and resolve these matters."
Ubisoft's response:
"Our technical teams are investigating reports of problems with our games following the Windows 11 24H2 update. We recommend players experiencing issues check our support page for temporary workarounds."
Temporary Workarounds for Affected Gamers
While waiting for official fixes, players have found these solutions helpful:
-
Rolling back the update:
- Go to Settings > Windows Update > Update history
- Select "Uninstall updates" and remove KB5037000 (24H2) -
Running games in compatibility mode:
- Right-click game executable > Properties > Compatibility
- Try Windows 8 or Windows 10 compatibility mode -
Disabling certain Windows features:
- Turn off Memory Integrity in Core Isolation settings
- Disable Virtual Machine Platform if not needed -
Updating graphics drivers:
- Both NVIDIA and AMD have released hotfix drivers addressing some 24H2 issues
Technical Analysis of the Conflict
Early investigations suggest several potential causes:
- Security changes: 24H2's enhanced security features, particularly around memory management, may conflict with anti-cheat systems
- Scheduler adjustments: Changes to the thread scheduler could affect game performance
- DRM interactions: Ubisoft's Denuvo implementation might not be fully compatible with new Windows security protocols
- DirectX optimizations: Microsoft's graphics API updates could require game patches
Historical Context
This isn't the first time Windows updates have disrupted gaming:
- 2021: Windows 11's initial release caused performance drops in some games
- 2018: The Windows 10 October Update broke fullscreen optimizations
- 2015: Windows 10's launch affected several Steam games
However, the scale of the 24H2 issues appears particularly widespread for Ubisoft titles compared to other publishers' games.
What Gamers Should Do Next
- Check official channels: Both Microsoft and Ubisoft are expected to release statements as they develop solutions
- Hold off updating: If gaming is crucial, consider delaying the 24H2 update
- Report issues: Submit detailed reports through Windows Feedback Hub and Ubisoft Support
- Monitor community forums: Sites like Reddit's r/Windows11 and r/ubisoft are tracking workarounds
The Bigger Picture for Windows Gaming
This incident raises important questions about:
- Microsoft's game compatibility testing procedures
- The balance between security and performance in Windows updates
- Publisher preparedness for major OS changes
As Windows continues evolving, both Microsoft and game developers will need to improve their coordination to prevent similar disruptions.
Looking Ahead
Microsoft has indicated that a cumulative update addressing some of these issues is in development, while Ubisoft has started rolling out patches for affected titles. The gaming community hopes for swift resolutions, particularly with major Ubisoft releases like Star Wars Outlaws on the horizon.