Do not add shares of recently opened documents to Network Locations Remote shared folders are not added to Network Locations whenever you open a document in the shared folder. If you disable this setting or do not configure it, when you open a document in a remote shared folder, the system adds a connection to the shared folder to Network Locations. If you enable this setting, shared folders are not added to Network Locations automatically when you open a document in the shared folder.

(1) GPO: User Configuration\Administrative Templates\Desktop!Do not add shares of recently opened documents to Network Locations (2) REG: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer!NoRecentDocsNetHood