PRB: Cannot Expand "My Computer" in Component Services MMC Snap-In

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When you open the Component Services Microsoft Management Console (MMC) in Microsoft Windows 2000 and click to expand the Component Services and Computers nodes, you may receive the following error message:
Catalog error - An error occurred while processing the last operation: 80040154, Class not registered.
In addition, you may encounter the following symptoms:
  • Some or all Active Server Pages (ASP) pages stop responding (hang) or cause 100 percent CPU utilization when they run in Medium or High application protection.
  • The same ASP pages will work if the Web site is placed in Low application protection (for example, the Inetinfo.exe process).
  • If you click Start, point to Programs, click Administrative tools, and then click Component Services, it does not open.


To resolve this problem, reinstall Component Services as follows:
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
  1. Open registry editor, locate HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\COM3, and then delete this key.
  2. From the Start menu, point to Settings, click Control Panel, and then click Add/Remove Programs.
  3. Click Add/Remove Windows Components.
  4. Proceed through the wizard, and accept all of the defaults.
  5. Restart the computer.


For additional information, click the article number below to view the article in the Microsoft Knowledge Base:
246499 PRB: COM+ Setup Problems While Upgrading to Windows 2000

ID articol: 301919 - Ultima examinare: 15 mar. 2008 - Revizie: 1