UNSUPPORTED_PROCESSOR BSOD on Windows 11 Insider last Canary build

[Vito Macina]

Hi all! I want to report that with the latest Windows 11 Insider builds (Canary) I continue to see this screen. What can I do? With all other builds there is no issues. Thank you so much for your help.

I've the following CPU: 13th Gen Intel(R) Core(TM) i7-13700KF   3.40 GHz

[Patrick Husband]

Sorry had to mark this an answer to reply, but I am having the same issue.

One "solution" is to downgrade to a single CPU with a single core, but then the update fails to even try to install.

Found no other references, other than here where apparently 12th gen is fine:

https://infosec.exchange/@RonnyTNL/114116747315755730

For reference it is failing for me using an i9-14900K so if 13th and 14th gen are failing then I am amazed it is not affecting more people, I have had this issue for the last 3 canary builds. Dev is currently still fine.

[Vito Macina]

In the latest Canary build (27823) they fixed this bug:

"Fixed an underlying issue which was causing some Insiders to unexpectedly get bugchecks with UNSUPPORTED_PROCESSOR when upgrading or clean installing the latest builds".

https://blogs.windows.com/windows-insider/2025/03/26/announcing-windows-11-insider-preview-build-27823-canary-channel/

[Patrick Husband]

Yes, would have been good for them to know it was a known issues for the last 3 builds!