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Editorial Team
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Asked: 2026-05-22T17:38:30+00:00

I logged into my PC with administrator account. When I try to enable the

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I logged into my PC with administrator account. When I try to enable the ‘sa’ account of SQL Server 2008, I get the following error:

TITLE: Microsoft SQL Server Management Studio
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Alter failed for Login 'sa'.  (Microsoft.SqlServer.Smo)

For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=10.50.1600.1+((KJ_RTM).100402-1540+)&EvtSrc=Microsoft.SqlServer.Management.Smo.ExceptionTemplates.FailedOperationExceptionText&EvtID=Alter+Login&LinkId=20476

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ADDITIONAL INFORMATION:

An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo)

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Cannot set a credential for principal 'sa'. (Microsoft SQL Server, Error: 15535)

For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=09.00.1399&EvtSrc=MSSQLServer&EvtID=15535&LinkId=20476

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1 Answer

  1. Editorial Team

    Have you tried Microsoft KB956177 before?

    To resolve this issue, make sure that you select the Map To Credential check box on the General tab of the Login Properties – sa dialog box before you change the “sa” login properties and then click OK to close the dialog box.

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