Few times I get such error Snap-in failed with a long CLSID string mentioned in the subject above. On this client machine previously I have SQL Server 2000 tools and recently installed 2005 version too, instantly error: Snap-in failed to initialize Name Microsoft SQL Enterprise Manager CLSID : {00100100-1816-11D0-8EF5-00AA0062C58F} Tried the undocumented method by deleting the registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MMC\SnapIns\{00100100-1816-11d0-8EF5-00AA0062C58F} For a while the tools...(
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Read the complete post at http://sqlserver-qa.net/blogs/tools/archive/2008/01/08/snap-in-failed-to-initialize-name-microsoft-sql-enterprise-manager-clsid-00100100-1816-11d0-8ef5-00aa0062c58f.aspx