Here is a list of things that could be causing the issue with the shared drive file sizes not updating:

1. Check server: Make sure the server is up and running.


2. Check internet connection: Make sure your internet connection is stable.


3. Check your network: Make sure your network is functioning properly.


4. Check your operating system: Make sure your operating system is up-to-date.


5. Check your security settings: Make sure your security settings are compatible with the shared drive.


6. Check for updates: Check for updates to the software or driver associated with the shared drive.


7. Check folder permissions: Make sure the correct permission and access rights have been set for the shared drive.