| Error Code / Message | Cause | Resolution | |----------------------|-------|-------------| | "Product deactivated" | Subscription expired or license removed | Renew subscription or reassign license in admin center. | | "Something went wrong [0x80070005]" | Permission issue (often on managed devices) | Run Office as administrator or contact IT. | | "No internet connection" | Proxy/firewall blocking activation URLs | Allow *.office.com , *.officeconfig.msocdn.com , activation.sls.microsoft.com . | | "Account not in this domain" | Wrong account used for organization plan | Use the work/school account, not personal Microsoft account. | | "Product key already used" | Key previously activated on another device | Deactivate from old device or contact support. |
: To verify, go to File > Account (or Word > About Word on Mac) to see your activation status. How to Use a Product Key microsoft 365 activate