OneDrive　Outlook

It seems you are experiencing issues with Outlook not syncing emails properly with OneDrive, which is causing problems when shutting down your PC. Here are a few steps you can try to resolve this issue:

1. Check Your Account Settings: Ensure that your Outlook account settings are correctly configured to sync with OneDrive. You may want to verify that your email account is set up properly in Outlook.
2. Clear Offline Items: If you are using cached mode in Outlook, you can try clearing offline items from the folder where the sync failures occur. Right-click the folder, select Properties, go to the General tab, and select Clear Offline Items.
3. Use Online Mode: If the issue persists, consider using Outlook in online mode instead of cached mode to see if that resolves the syncing problem.
4. Registry Key Adjustment: Sometimes, registry keys can help with syncing issues. There are specific registry keys that can be adjusted to improve Outlook's performance with IMAP accounts. You can find guidance on how to modify these keys safely.
5. Selective Startup: If Outlook is freezing or not responding, you might want to perform a selective startup to identify if any services or startup programs are causing the issue. This can help isolate the problem.

If these steps do not resolve the issue, you may need to consult further resources or support for more specific troubleshooting related to your setup.

References:

• Outlook not responding error or Outlook freezes when you open a file or send mail
• Synchronization is unsuccessful after mailbox items are changed through EWS calls in cached-mode Outlook client