1. Check your internet connection waves and make sure it is working.t

2. No internet connection. Check if outlook is set to sync automatically, and turn it off if it is.t

3. Disable any add-ins or plugins that may be interfering with the synchronization process.t

4. Uninstall and reinstall Outlook to restore all settings to their default values.t

5. Contact Microsoft Support for troubleshooting assistance.t