Blue screen of death (UNSUPPORTED_PROCESSOR) after installing KB5062632 monthly Rollup July 2025 After installing the KB5062632 monthly Rollup July 2025 on VirtualBox version 6.1.50 I get a blue screen of death with the error message UNSUPPORTED_PROCESSOR as soon as I reboot. I've tested live OS integration as well as creating an updated image and a clean new installation which results in the same error. The processor is an AMD Ryzen 9 3900X I have for over a year and didn't have this problem before. Does anyone else have this problem with a newer processor?