To fix the problem of Outlook not automatically checking for new emails:

1. Check Outlooks synchronization settings to ensure that synchronization is enabled.
2. Check your Internet connection to make sure that it is active.
3. Restart your computer and re-launch Outlook.
4. Disable any antivirus or firewall tools that may be preventing Outlook from downloading emails.
5. Scan your computer for possible viruses or malware.
6. Update Outlook to its latest version.