1. Check your Outlook client to ensure your account is active and properly configured.
2. Verify that your email address is correct.
3. Ensure you have the most recent version of Outlook installed.
4. Ensure your computer has the latest version of Windows 10.
5. Check for any conflicts or compatibility issues between your Outlook client and third-party software.
6. Check your anti-virus software for any potential interference.
7. Ensure your Internet connection is stable and secure.
8. Check the Outlook server status.
9. If necessary, delete and recreate your Outlook profile.
10. Look for any other hidden settings which may be causing the issue.