Synapse 4 Crashing on Windows 11 25H2, ucrtbase.dll | Razer Insider
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Synapse 4 Crashing on Windows 11 25H2, ucrtbase.dll

  • January 2, 2026
  • 1 reply
  • 91 views

TheLastOmen

Recently my Razer Synapse 4 is crasing, when i checked the event viewer logs, it seems that ucrtbase.dll is crashing on me, i dont have any rgb apps except for Logitech G Hub, can you help me resolve this issue?


Event Viewer logs:

Faulting application name: RazerAppEngine.exe, version: 4.0.563.5, time stamp: 0x668dce24
Faulting module name: ucrtbase.dll, version: 10.0.26100.7019, time stamp: 0x55eee9bf
Exception code: 0xc0000005
Fault offset: 0x00000000000ed151
Faulting process id: 0x11B8
Faulting application start time: 0x1DC7B9E601E6F50
Faulting application path: C:\Program Files\Razer\RazerAppEngine\app-4.0.563\RazerAppEngine.exe
Faulting module path: C:\Windows\System32\ucrtbase.dll
Report Id: 2f9df8b5-d821-4d3c-b24d-27f567031f62
Faulting package full name: 
Faulting package-relative application ID: 

1 Reply

TheLastOmen
  • Author
  • Insider Mini
  • January 2, 2026

Update: Seems uninstalling the Razer Chroma fixes the issue. There are issues on the Chroma app I guess.