Windows Server 2008 R2 Print Server Driver Fix

Our fearless Engineer Brian was having a problem trying to add printer drivers to Windows Server 2008 R2, and he uncovered a fix for a grayed out "Additional Drivers" option. Try this as a fix:

1. Open regedit
2. HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionPoliciessystem 
3. Right-click a blank area in the right pane 
4. Click New 
5. Click DWORD Value 
6. Type: LocalAccountTokenFilterPolicy 
7. Double-click the item you just created 
8. Type 1 into the box 
9. Quit regedit, restart the server