Follow these steps to verify if a Windows account has read permissions to a UNC path:
  1. Log in as the Windows account in question.
  2. Go to Start, Run. If Start, Run is not available, try pressing Windows key + R
  3. Type or copy in the UNC path. Press Enter.
  4. If the account has view permissions to this folder, the folder should open
If the folder is not available or the account does not have permissions to it, an error should occur.

Follow these steps to verify if a Windows account has write permissions to a UNC path:
  1. Log in as the Windows account in question.
  2. Go to Start, Run. If Start, Run is not available, try pressing Windows key + R
  3. Type or copy in the UNC path. Press Enter.
  4. In the folder that opens, right-click in the white space and select New, Text Document.
  5. If a new text document is created, the account has write permissions to this folder
If an error message occurs, the account does not have write permissions to this folder.