Identify the active policy

The easiest way to check whether this setting is active on a computer is to open the registry editor and enter the value of the key:
HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\WcmSvc\GroupPolicy\fBlockNonDomain is checked. If the key does not exist or is 0 (NULL), the computer can connect to any other networks in addition to the domain network. If 1, a further network connection is not possible.