since 8.3.3 the installer will not work

Hi all, I have 8.3.3 on my Windows 11 installed. Everything fine. Wanted to update the lastest one to 8.3.5. Did not work. Deinstalled 8.3.3 but the 8.3.5 installer would not start at all. In task manager no action of the 8.3.5. Virus scanner is off, also tested the installation as admin.

Installed back the 8.3.3 (what works fine). Waited for the next update what I did see today is the 8.3.9.

Same issue again, canot install from 8.3.3++ new update, same process, deinstall, cleaned regit, new boot,  no virus manger/scanner, in task manager no sign of the 8.3.9 also als admin.

My latin is to a end and I dont know what to do, some hints?

BR

Per