Warning : Install KB5126836 (2026.10 Rollup) on Windows 8.1 Break Explorer Don't Install it KB5123066 (2026.09) is worked Other Updates (KB5127356, KB5126773, KB5127664, KB5127688) Tested
Hi, Do you have more details? Remember that the update requires modding such as: https://forums.mydigitallife.net/posts/1924758 My two cents. Thank you.
Indeed, can you please share more information? Because by default 2026-10 cannot work on 8.1 I tested KB5126836 in Server 2012 R2 and Explorer seems to work fine so what modification method did you use to test on 8.1 ? Also please describe more precisely what happens, is there an error with explorer.exe itself or shell32 etc explorer.exe doesn't load at all ? Blue Screen ? Any specific errors in the Event Viewer report ? The only potential problem that I saw is I think some of the personalisation settings were re-applied (re-initialized?) after reboot. Maybe that is somehow problematic on Client ?