Quick overview:
The MMC (short for Management Console) is a management interface for NT-based operating systems, including Windows 2000 and XP Professional. Various management tasks (defragmentation, group policies) or PC utilities are carried out in this console. You can access this console, for example, by clicking Start/Run and typing gpedit.msc.
However, very often cases come to light in which users can no longer access this console due to damage or missing rights (despite being logged in as an administrator). Windows-Tweaks offers you the following solutions, which have already been successful in practice:
1. Some versions of the Desktop Sidebar (www.desktopsidebar.com) are known to cause this error when they are uninstalled. So try to install the latest version of the sidebar as a test and then remove it again (via the control panel) if you do not want to use it.
2. As Windows 2000 does not include the well-known system configuration program msconfig, we have provided the Windows XP version for you to download. Click here to download msconfig.exe. Open it! Now click on Expand file and enter the name "compmgmt.msc" under "File to be restored". Under "Restore from" enter "F:\i386 \compmgmt.ms_" (or with the correct drive letter for the inserted Windows 2000 CD)!
The target directory is "D:\WINNT\System32\compmgmt.msc"! (or your Windows 2000 system drive)
After a short moment, the Management Console is completely reinstalled.
3. If this does not work either, you can reintegrate the corresponding DLL files into the system. To do this, click on Start/Run and enter the following commands followed by Enter.
regsvr32 c:\windows\system32\msxml.dll
regsvr32 c:\windows\system32\msxml2.dll
regsvr32 c:\windows\system32\msxml2r.dll
regsvr32 c:\windows\system32\msxml3.dll
regsvr32 c:\windows\system32\msxml3a.dll
regsvr32 c:\windows\system32\msxml3r.dll
regsvr32 c:\windows\system32\msxmlr.dll
Many thanks for this last hint to Mirko W.!
4. Only for owners of Acer TV cards: If you have such a card in your PC, it is advisable to install the latest drivers.
I hope that I have been able to help you with this guide.
NOTE FOR NEW PUBLICATION: This article was produced by Sandro Villinger and comes from the Windows Tweaks archive, which has been built up since the late 1990s.

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