This March 2017 Preview of the Quality Rollup for Windows Vista Service Pack 2 (SP2) and Windows Server 2008 Service Pack 2 (SP2) includes cumulative improvements in reliability in the .NET Framework 2.0 Service Pack 2 (SP2).  We recommend that you apply this rollup as part of your regular maintenance routine. Before you install this update, see the "Prerequisites" and "Restart requirement" sections.

Quality and reliability improvements

  • For SQL

    Exceptions may be thrown in SqlClient during prelogin handshake processing or during MARS communication when a received TDS packet's size is smaller than expected. Prelogin handshake errors will manifest as an OverflowException, and MARS errors will manifest as a generic "Physical connection is not usable" SqlException.

How to get this update

For Windows Vista SP2 and Windows Server 2008 SP2

This update is available by manual download only.

Manual download

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.


To apply this update, you must have the .NET Framework 2.0 SP2 installed.

Restart requirement

You must restart the computer after you apply this update if any affected files are being used. We recommend that you close all .NET Framework-based applications before you apply this update.

Applies to

This article applies to the following:

  • Microsoft .NET Framework 2.0 Service Pack 2

    • Windows Server 2008 Service Pack 2

    • Windows Vista Service Pack 2

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