[FAQ] I get a Blue Screen of Death (BSOD) relating to cldflt.sys when trying to launch Affinity. Why?

[Leigh]

We've had users report that when trying to launch our apps on Windows they're getting a Blue Screen of Death message relating to cldflt.sys. This is also affecting other apps including Microsoft's Visual Studio as reported on the Microsoft Developer Forums. This BSOD error started appearing after Microsoft released the Windows 10 KB4517389 update.

Microsoft released a Windows 10 update on 10/12/19 (KB4530684) which includes the below fix. Please download and install this update and try opening the Affinity app again to see if your issue is resolved.

• Addresses an issue that might cause error 0x3B in cldflt.sys on some devices.