# Windows - Administration References

## Windows Server RDP Port Registry Path

**Path**: `HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp`  
**Attribute name**: `Port Number`

## Remove Windows License Key

To remove the product key from a Windows Server 2008 (R2) follow these steps:

1. Open command prompt as administrator: 
    1. ```
        START->RUN->”cmd” (right-click -> run as administrator)
        ```
2. Type in: `slmgr -upk`
3. Wait a few seconds until windows confirms the removal of the product key.