Windows KB5121767 OOB update fixes shutdowns on some Dell PCs

Microsoft released an out-of-band (OOB) update (KB5121767) to address a compatibility issue between a Windows USB-C Connection Manager interface and the Intel Innovation Platform Framework (IPF) Processor Participant driver on certain Dell PCs. The conflict, introduced in the June 2026 KB5095093 preview update, caused unexpected shutdowns, performance degradation, increased heat, and battery drain. The issue affected Dell systems running Windows 11 25H2 and 24H2 after installing the July 2026 KB5101650 update, with Microsoft temporarily blocking the update until the fix was available.

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