A Hypervisor Error in Windows 11 is a Blue Screen of Death (BSOD) issue usually caused by problems with virtualization technologies such as Hyper-V, Virtual Machine Platform, Windows Hypervisor Platform, outdated drivers, corrupted system files, BIOS settings, or hardware instability. It commonly appears after Windows updates, driver conflicts, or when using virtual machines and emulators.

To fix the issue permanently, start by updating Windows 11, graphics drivers, chipset drivers, and BIOS/UEFI firmware. Run system repair tools like SFC (sfc /scannow) and DISM to repair corrupted files. If you do not use virtualization software, disable Hyper-V, Virtual Machine Platform, and Windows Hypervisor Platform from Windows Features. Also check for RAM errors, overheating, or CPU overclocking instability, as faulty hardware can trigger the error repeatedly.

In many cases, disabling unnecessary virtualization features and repairing system files permanently resolves the Hypervisor Error without needing to reinstall Windows.