slmgr /xpr | Error Code | Meaning | Fix | |------------|---------|-----| | 0xC004F034 | Key mismatch or invalid | Check edition; use correct key | | 0x803FA067 | No valid license found | Re-enter key or reinstall correct edition | | 0xC004C003 | Blocked key | Key already used on another PC or blocked by MS | | 0x8007232B | DNS activation failure | Connect to internet; check date/time |