Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)) - by Alberto Morillo

Status : 

  Not Reproducible<br /><br />
		The product team could not reproduce this item with the description and steps provided.<br /><br />
		A more detailed explanation for the resolution of this particular item may have been provided in the comments section.

Sign in
to vote
ID 334218 Comments
Status Closed Workarounds
Type Bug Repros 1
Opened 3/24/2008 6:13:23 PM
Access Restriction Public


ERROR.  Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))

This error came when we try to open a table on a database stored on a SQL Server 2005 instance using SQL Server Management Studio 2005 after installing SQL Server 2008 (Katmai - CTP 5 November 2007) for testing purposes on the same machine.


Rebuild SQL Server 2005 Registry running setup from the command prompt with the REINSTALL=ALL and REINSTALLMODE=omus parameters.

Please visit for the solution step by step.

Sign in to post a comment.
Posted by Buck [MSFT] on 4/14/2008 at 11:03 AM
Alberto - we were able to perform the reproduction steps as described, using our latest build. I'll close this one and you can let me know if you're still seeing this.

Thanks! -

Buck Woody, SQL Server Program Manager