Troubleshooting why you are unable to open files on the shared drive:

1. Make sure you are connected to the same network as the shared drive.
2. Check if you are entered under the list of authorized users.
3. Check the necessary permissions and see if you have them granted.
4. Check the file format and make sure it is supported by the shared drive.
5. Restart your computer and check if the problem persists.
6. Make sure to use the latest version of the application you are trying to open the file with.

If these steps don’t work, contact your system’s administrator.