Microsoft has released an out-of-band (OOB) Windows update to fix an incompatibility that caused certain Dell PCs to overheat, slow down, and randomly shut down after a June preview update.
The glitch was traced to a conflict between the Intel Innovation Platform Framework driver and the new Windows USB-C Connection Manager interface introduced in the June 23 preview update on affected Dell devices. Users reported significant performance degradation, with one observer noting that Microsoft’s claim of “changes” in performance was accurate only if “changes” meant “slows down, overheats, and randomly shuts down.”
Microsoft had previously halted the July 2026 Patch Tuesday rollout for affected systems to prevent further damage. The OOB update, KB5121767 for Windows 11 versions 25H2 and 24H2, and KB5121768 as a separate hotpatch for enterprise devices, resolves the driver incompatibility and clears the way for affected Dell models to receive the full July security patch bundle, which addressed 622 CVEs.
The fix marks Microsoft’s first OOB update in several months, and comes despite the company’s Windows chief having promised improved update quality. The underlying issue was introduced in the previous month’s update, highlighting ongoing quality control challenges in the Windows update pipeline.
The Register reported that while Microsoft’s quick action to halt the rollout and release a targeted fix was appropriate, the fact that a preview update caused such instability in the first place raises questions about testing and validation processes.
Source: Microsoft rushes out Windows fix for Dell’s hot and bothered PCs (The Register, July 2026)