No unmanaged clients require the manual installation of a license file. However, to enable the submission of reputation data from an unmanaged Windows client, you must install a paid license on the unmanaged client. Unmanaged Mac clients and Linux clients do not submit reputation data.
To license an unmanaged Windows client
Locate and create a copy of your current Symantec Licensing File (.slf).
Use the same file that you used to activate your license on Symantec Endpoint Protection Manager.
By default, the folder in which the inbox appears is hidden, so use Folder Options to enable the showing of hidden files and folders.
On the clients that run 12.1.x on a pre-Vista version of Windows, the inbox is located by default at C:\Documents and Settings\All Users\Application Data\Symantec\Symantec Endpoint Protection\CurrentVersion\inbox.
If the license file is invalid or the license installation failed, the license appears in a new folder called Invalid. If the file is valid, it is automatically removed from the inbox after it is processed.
To verify that you applied the license correctly, check that no files appear in the inbox folder.
Check that the .slf file is in the following folder (default location):