Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
I’m sorry the Online Repair has left Office in a worse state, especially while you are also trying to recover the missing Outlook calendar and contacts. A completely blank activation window can indicate that the web component Office uses to display the sign-in page is not loading correctly.
Please try repairing Microsoft Edge WebView2 Runtime:
- Close all Office applications and end any remaining Office processes in Task Manager.
- Open Settings > Apps > Installed apps.
- Find Microsoft Edge WebView2 Runtime, select the three-dot menu, and choose Modify > Repair.
- Restart Windows, open Word, and select File > Account > Sign in.
If WebView2 is not listed or repairing it makes no difference, create a temporary new Windows user account and test Office activation there. If the sign-in window loads under the new Windows profile, the problem is likely limited to the original Windows profile rather than the Office licence itself.
Please avoid deleting or recreating the Outlook profile until the calendar and contacts have been located. If they were stored locally rather than synchronized with an email account, changing the Outlook profile could make recovery more difficult.