Windows 11 25H2 – Update KB506881 causes unexpected reboots (no BSOD, silent restart)

well here was my issue with the security update KB5068861 patch Tuesday  and just to mention i have a brand new pc with windows 11 installed only two weeks old now, anyway all other updates downloaded and installed on my system just fine no problem there, at  any rate i tried to download several times this update and to no avail it just would not install on my system, anyway to make this as short as possible i tried everything to no avail it would just not install, i got a little disturbed about this so i got a Microsoft Teck to take control of my pc and i have to mention he new his stuff this Microsoft technician there was no question there, what he did is this he downloaded  win_11_25H2_english_64 disk image file and all was well after that it downloaded and installed in no time flat with no problem, the real problem for some unknown reason  the security patch above would just not install but all went well after he did this and this is the first time i had to get a ms Teck to look at anything on all the windows operating systems pc's that i have had through the years, but just to mention again this tec guy new his stuff there's no dought about that ,anyway if anyone on the forums here have to go through doing this sometimes to elevate the frustrations, its the way go .