Forum Discussion
Windows 11 update error encountered when upgrading from Windows 10
The error code 0x80888002 - 0x40008 when upgrading from Windows 10 to Windows 11 typically means there was an abrupt down-level failure in the upgrade process and the setup couldnt complete.
The "- 0x40008" part specifically corresponds to the Out-Of-Box Experience phase of upgrade setup, and some sources suggest it relates to the action SP_EXECUTION_OP_PREPARE_SAFE_OS in the safe OS preparation portion.
Possible Fix for Windows 11 update error encountered:
1. Ensure your system meets all Windows 11 requirements
Check TPM version (2.0), Secure Boot enabled, supported CPU generation, enough free disk space, etc.
You can do this by running the official PC Health Check tool or equivalent.
2. Temporarily disable or uninstall incompatible software drivers
Remove or disable 3rd-party antivirus or security software
Uninstall any “printer class” or unusual drivers that might interfere with the compatibility phase.
What's to do as the pc health check tool says this processor is not supported by Windows 11 and there is no TPM 2.0 on my computer.