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Greg Low (The Bit Bucket: IDisposable)

Ramblings of Greg Low (SQL Server MVP, MCM and Microsoft RD) - SQL Down Under

FIX: DQS Won't Work after upgrading to CU1 - SQL Exception 0x80131904

There are lots of reports of data quality services (DQS) not working after installing CU1 for SQL Server 2012. One symptom is that when trying to connect from the DQS client, you receive the following error: "System.Data.SqlClient.SqlException (0x80131904): An error occurred in the Microsoft .NET Framework while trying to load assembly id 65581"

After applying CU1, you need to execute:

dqsinstaller.exe -upgrade

This is typically from the folder C:\Program Files\Microsoft SQL Server\MSSQL11.MSSQLSERVER\MSSQL\Binn (but depends upon your installation path)

Published Friday, April 27, 2012 10:51 AM by Greg Low

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Aaron Bertrand said:

While I joked earlier this month that SQL Server 2012 Service Pack 1 was released on the same day as

April 27, 2012 8:50 AM

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