It seems that the issue you are experiencing with your connected Gmail calendar not appearing in Outlook on the web could be related to the removal of the ability to add new accounts using the Connected accounts feature, which was discontinued in September 2018. To troubleshoot this issue, ensure that your Gmail account is properly prepared for connection to Outlook. This includes enabling IMAP and possibly creating an app password if you have two-step verification enabled on your Gmail account.
Here are some steps you can take:
- Check IMAP Settings: Make sure that IMAP is enabled in your Gmail account settings. You can do this by signing into your Gmail account, going to Settings → Forwarding and POP/IMAP, and ensuring that "Enable IMAP" is selected.
- Recheck Account Connection: Since you have already reconnected your Gmail account multiple times, consider removing it entirely from Outlook on the web and then adding it back again to see if that resolves the issue.
- Check for Updates: Ensure that your browser is up to date, as sometimes browser issues can affect how Outlook on the web displays connected accounts.
- Contact Support: If the issue persists, consider reaching out to Microsoft 365 Support for further assistance.
These steps should help you troubleshoot the problem with your Gmail calendar not appearing in Outlook on the web.