Why is OneDrive not showing all of my synced folders and files?

1. Check your OneDrive settings to make sure the folders you want to sync are selected.
2. If you are using a personal OneDrive, consider switching to the new OneDrive sync app.
3. Have your IT department or an IT technician verify that your computer's operating system and communication ports are up-to-date and syncing properly.
4. Check the Microsoft OneDrive status page to ensure there are no known issues or problems.
5. Reach out to Microsoft customer support for help with troubleshooting specific OneDrive issues.