Sometimes the background service responsible for checking licenses gets stuck. Close all Office apps. Open from the Start menu. Locate Software Protection . Right-click it and select Restart . 5. Clean Install Using the Setup Prod Tool
If a user initially installed a KMS client key (e.g., via a KMS -preconfigured installation), then later tried to switch to a MAK key without fully purging the KMS licensing remnants, the licensing service becomes confused. It holds a broken license binding – a "token" that references a non-existent KMS server or an incomplete SKU. error code 0xc004f017 office activation
Older "leftover" Office files are confusing the activation wizard. via a KMS -preconfigured installation)
Run: cscript ospp.vbs /unpkey:XXXXX (replace XXXXX with the last 5 digits of any "Grace" or "Trial" keys found). error code 0xc004f017 office activation