Fix Windows Activation Error 0xC004F074

Fix Windows Activation Error 0xC004F074

Error 0xC004F074 means the KMS client could not contact the KMS host server. Common causes:

- Port 1688 blocked by firewall

- DNS cannot resolve KMS host

- Clock drift > 5 minutes between client and server

Step-by-step fix:

slmgr /skms kms.windowskms.com:1688
slmgr /ipk W269N-WFGWX-YVC9B-4J6C9-T83GX
slmgr /ato
slmgr /dli

Full guide: 0xC004F074 troubleshooting