Hi Vojimir Lučić,
According to my research, the error "Something went wrong. [1001]" when signing into Microsoft 365 desktop applications (like Word, Excel, or Outlook) can occur due to several reasons, including authentication issues, or system misconfigurations. Here’s how to troubleshoot and resolve it:
1. Check Microsoft 365 Service Status
- Verify if Microsoft 365 services are operational by checking:
Microsoft 365 Service Health Status
2. Restart the Application & Computer
- Close and reopen the Microsoft 365 application.
- Restart your computer to refresh system processes.
3. Check Internet Connectivity
- Ensure you have a stable internet connection.
- Try switching networks (Wi-Fi to Ethernet or vice versa).
4. Update Microsoft 365 Apps
- Open any Office app > File >Office Account > Update Options > Update Now.
- Install the latest updates and restart the app.
5. Repair Office Installation
- Open Control Panel > Programs and Features.
- Select Microsoft 365 Apps > Change.
- Choose Quick Repair > Repair.
6. Use the Microsoft Support and Recovery Assistant (SaRA)
- Download and run the Microsoft SaRA tool to automatically diagnose and fix sign-in issues.
If the issue persists, try signing in via a web browser first (office.com) to confirm your account is active.
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