{Class-GUID}

  • Article

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

HKLM\SYSTEM\CurrentControlSet\Control\Class

Description

The {Class-GUID} subkey represents the component associated with the class-GUID.

Each {Class-GUID} subkey in the Class subkey represents a device class and is named by the GUID for the class. It appears as a 16-digit alphanumeric string within curly braces. These {Class-GUID} subkeys store configuration data that applies to the entire class of devices, such as the class of all modems.

Within the {Class-GUID} subkeys are 4-digit numbered subkeys, which represent particular devices that are instances of the class. These subkeys store data that apply only to that device.

Because the Class subkey is hardware specific, its contents vary widely. The Class subkey on your computer might look quite different from the attributes described in this reference.

Change Method

It is strongly recommended that you do not make changes to entries in the Class subkey or any subkey within it.

Note

  • The {Class-GUID} subkey is a variable representing the subkeys in the HKLM\SYSTEM\CurrentControlSet\Control\Class subkey. It does not actually appear in the registry. This variable subkey displays the entries and subkeys that are common to many of the subkeys in the Class subkey. The actual Class subkeys in your registry depend on the hardware installed on the computer or available to the system.

Tip

  • To determine the type of hardware device represented by a {Class-GUID} subkey, use the registry editor Regedit.exe. Click the name of the class-GUID subkey (it appears as a 16-byte alphanumeric string within brackets). The device type appears in the value of the first, unnamed entry in the subkey.

Caution

  • Do not change any entries in the Class subkey or any subkey within it. These subkeys are configured by the system to comply with Plug and Play standards. Changing any data can prevent your computer devices from starting or operating properly.