If the Windows Update hot patcher checks that the function hasn’t already been patched, does that mean you can’t install two hot-patches?

· Raymond Chen · Nov. 10, 2026, 1:30 a.m.
Summary
This blog post explores the mechanics of Windows Update's hot-patching process, discussing whether it's possible to apply multiple hot patches in succession. It delves into how Windows can manage stacked hot-patches, comparing it to the brain's ability to suppress self-tickling. The author sheds light on the limits of two hot-patches to prevent complications in patch management.