Hey, I finally got a solution for the problems most of us had these days. At first - please excuse my bad English. My configuration: MacBook Pro 13 M1 2020 - Monterey 12.0.1 - Parallels 17.1.0 So I updated all at once - macOS, Windows and Parallels and things in the VM started to get weird. The SearchIndexer.exe caused problems, the Settings-App didn't start, everything were very slow and buggy. But I really need this VM so I started to look for a solution. Because I updated all at once I didn't knew which of the 3 caused the problems. But after a while I figured out, that Parallels was the bad boy. Not the whole program, but the Secure-Boot option, which is activated by default in the new version of Parallels. I hope with the new update come a fix but for now to work with the VM's the following steps need to be done. Guide: Go to the preferences of the VM and tick the box "Select boot device at startup". Now with access to the BIOS/UEFI you need to deactivate the Secure-Boot-Feature (there is a [X]- option, which needed to be change with "Space" to [ ]). After that, save. Now the tick at "Select boot device at startup" can be removed and all should work like before. Fresh install: At my whole troubleshooting process I even tried to reinstall windows. As I tried it, it wasn't possible to install windows with the help program (which do all the work for you with the partitioning and at the windows setup assistant). So the installation need to be done manually (with a tick at the installation assistant of parallels). As described before the Secure-boot-feature need to be deactivated and manually install the Parallels-Tools in Windows after the first boot. If you already tried to install windows the normal way and find yourself in the situation, that you can't access the preferences-menu of the VM in the Control Center of Parallels, you can access it by clicking at the gearwheel after you changed the view from compact to expanded above. I hope this will help some of you.
