A bug introduced in the Windows 11 update (KB5121003) has caused crashes for some users, specifically affecting installations of Windows 11 versions 25H2 and 24H2 with OS builds 26200.9168 and 26100.9168. Embark Studios has acknowledged the issue, linking it to a change in the inpoutx64.sys file, and is working on a fix while providing a temporary workaround. The workaround involves stopping and deleting the inpoutx64 driver and removing the corresponding file from the system. Users can also choose to roll back to a previous version of Windows 11 until an official fix is released.