March 24th, 2023 A spike of Explorer crashes occurred with the release of a particular Windows Insider build. The crash looked like this: explorer!SomeRandomInternalFunction+0x7d4: 00007ffe`27b00720 006639 add byte ptr [rsi+39h],ah ds:00000000`0000003a=?? This is most likely a nonsense instruction. There’s no obvious reason to be adding a partial upper register. It looks like this is either a corrupted instruction pointer or corrupted code, because the first code byte is suspicious ...