UNC path is the path to shared directory on network server and should be defined as: "\\<server name>\<shared directory>".  Protected application may be located in this directory but this is not mandatory.

This error message is displayed in case application is not able to access this folder (folder does not exist or inadequate rights are set for the folder).

Be sure that required (read/write) access rights are set for this folder:

In order to give full read/write access to shared folder under Windows XP and later operating systems the following steps may be required:

1. Login locally to machine with shared folder. Do not set required rights when logged remotely.
2. Create shared folder
3. Turn off Simple File Sharing for a stand-alone system, or for a computer that is a member of a workgroup:

- Open a window in either My Computer or Windows Explorer.
- Click Tools|Folder Options from the menu.
- Click the View tab.
- Clear the Use Simple File Sharing (Recommended) checkbox under the Advanced Settings section.
- Click OK.

4. Set required rights for folder:

- Right click on folder name.
- Select "Sharing and security..."
- Click on "Permissions" button.
- Set advanced permissions as displayed on provided screenshot.

permissions entry example