Determining the product option of a Windows NT setup

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WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

For information about how to edit the registry, view the "Changing Keys And Values" Help topic in Registry Editor (Regedit.exe) or the "Add and Delete Information in the Registry" and "Edit Registry Data" Help topics in Regedt32.exe. Note that you should back up the registry before you edit it. If you are running Windows NT, you should also update your Emergency Repair Disk (ERD).

Using REGEDT32.EXE, find the following registry entry.

   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ProductOptions\ 
   ProductType
				

ProductType can be one of the following:

WinNT = Windows NT workstation, Windows XP/2000 Professional, Windows XP Home
LanmanNT = Windows NT/2000/2003 Server domain controller (primary or backup)
ServerNT = Windows NT/2000/2003 Server stand-alone

On Special Editions of Windows NT the ProductSuite key exists and can be the following values.

Windows 2003

• Terminal Server Enterprise
• Terminal Server
• Small Business
• Enterprise DataCenter
• Terminal Server DataCenter
• Enterprise

Windows XP

• Personal

Windows 2000

• Small Business
• Enterprise Terminal Server
• DataCenter

Windows NT

• Terminal Server
• Enterprise

Terminal Server = Windows NT Server 4.0 Terminal Server Edition
Enterprise = Windows NT Server 4.0 Enterprise Edition

Do not change any of this information under any circumstances. Changes to these values may result in the failure of the Windows NT operating system.