Once flagged, the key is placed on a global revocation list. Your Office apps will revert to "Unlicensed Product" mode, disabling editing capabilities and prompting you with persistent error messages. 4. Legal and Compliance Penalties
If you strictly require a non-subscription, perpetual version of Office, buy a legal retail license from Microsoft or an authorized third-party retailer. While the upfront cost is higher, it includes lifetime security updates and official support. Microsoft 365 Personal or Family microsoft office professional plus 2021 product key github
After entering a fake key, Office may appear activated for a few days or weeks, then revert to reduced functionality mode (read-only documents, “Unlicensed Product” banners). Once flagged, the key is placed on a global revocation list