Learn how to troubleshoot and fix Error 0xc0000098, The Windows Boot Configuration Data does not contain valid OS Entry in Windows 11/10.

After installing update KB5058405, affected PCs no longer boot and instead exit the startup process with error code 0xc0000098.

Security update KB5058405 for Windows 11 23H2 and 22H2 comes with severe side effects for some PCs. Microsoft's emergency patch fixes it.

Update on June 2, 2025: Microsoft recently released update KB5062170, an out-of-band hotfix for the previously released May update for Windows 11 23H2 and 22H2 that’s been wreaking havoc for ...