What is a CLSID number?

Posted on by Emilia Duggan

What is a CLSID number?

The Class ID, or CLSID, is a serial number that represents a unique ID for any application component in Windows. In practice, this means all registry entries for an application component can usually be found under the registry key HKEY_CLASSES_ROOT\CLSID\{CLSID value}.

How can I get CLSID?

To obtain a CLSID for your application, you can use the Uuidgen.exe, or use the CoCreateGuid function. The CLSID is a 128-bit number, in hex, within a pair of curly braces.

How do I find my ActiveX class ID?

One way to find it is to use the Edit + Find command in Regedit.exe, paste the CLSID guid you got from the type library. You get everything when you use SysInternals’ ProcMon utility. Start it up, then register the server with Regsvr32.exe.

How do I fix ActiveX control is not registered?

Solution

  1. You must make sure the client computers have the same operating system as the server.
  2. While creating the distribution kit, make sure you check both the Install Active X Container Support and Register files as ActiveX servers.
  3. Make sure the client computer has the necessary DLL file.

Can I delete CLSID?

After this key is created by installation, it will delete this key in HKCR/CLSID and recreate it when launching the application. Normally, it’s not possible to delete this key with a user (permissions), but when an “empty” SVS layer is active, it can delete this key.

Can I delete CLSID in registry?

Although this is a poor programming practice that clutters up the PC’s Registry with meaningless text entries, an unused CLSID entry isn’t likely to harm your computer. However, some Registry cleaners and other system maintenance programs specialize in removing this CLSID-based ‘junk.

Where is Hkcr CLSID?

HKCR & CLSID, ProgID, & IID ProgID keys are located in the root of HKCR, alongside the file extension associations discussed above: HKEY_CLASSES_ROOT\FaxServer.

How do I register for classes with CLSID?

In the COM Registration explorer, right-click COM Classes and click New COM Class. Type a new name for the COM class if needed. The name that you give the COM class will be registered as the default value under HKEY_CLASSES_ROOT\CLSID\. To give the class a new name, right-click it and click Rename.

How do I register ActiveX controls?

ActiveX Control Registration

  1. Search for Command Prompt in the Start Menu and right click >> Run as Administrator.
  2. Enter the following in the command box: regsvr32 ”<. ocx file path>”, including quotations.
  3. A dialog will pop up to confirm it succeeded.

What is CLSID folder?

A CLSID is a globally unique identifier that identifies a COM class object. For more information about a CLSID key and the function of it’s subkeys in the registry, then see CLSID Key (COM).

How do I remove CLSID from registry?

1 Answer

  1. Search registry by name of your DLL in HKCR (for example: HKEY_CLASSES_ROOT\CLSID{9B208FF8-F6B0-4290-94DE-7A4E857D8C4A}\InprocServer32) where GUID will correspond to your coclass CLSID.
  2. Then search by GUID_A and delete other entries (they are optional):
  3. ProgID like HKEY_CLASSES_ROOT\YourServerName.