mmc.exe 0x4a5bc808 error MFC42u.dll 0xc0000005
Microsoft Management Console 3.0 for Windows XP
The description for Event ID ( 1000 ) in Source ( Microsoft Management Console ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description
I also had this problem when trying to run the Exchange 2007 Managment Console. It turned out to be a memory issue. The Backup exec remote agent was using all the memory. Once I stopped this service the memory was freed up and all was ok.
To resolve the problem:
1 - Click Start -> Run and Type "mmc -32 dsm.msc". This will open the ADU&C Console
2 - Click View
3 - Click Add/Remove Columns
4 - Click Restore Defaults
5 - Click Ok.
Re-open the console with the standard shortcut. This worked for me.
This seems to be a bug in Windows 2003 R2 x64. I could not open Active Directory Users and Computers with the Administrators account (I would get an error message). I could open it from a MMC snap-in as well as with other user accounts with sufficient permissions. This event was logged each time I attempted to open Active Directory Users and Computers (I also received a low virtual memory error).
Open ADU&C using "mmc -32 dsa.msc" from the run command. Then open AD users and computers like you normally would. This seemed to fix it.
Came across the solution on a very unrelated discussion thread and tried it. I have no idea why this workaround worked or what was causing the original problem.