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Windows Vista: Cannot install Service Pack 2

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Hello,

a customer had the problem that he couldn’t install the Windows Vista Service Pack 2 on his Laptop. Service Pack 1 seems to be installed, but the Service Pack 2 Setup says it isn’t.

Service Pack 2 Setup do not recognize Service Pack 1
Service Pack 2 Setup do not recognize Service Pack 1

I processed a query by using the WMI Command line tool and filtered for Service pack 1 (Hotfixnumber KB936330).

wmic qfe|findstr /I 936330

But in the list of installed hotfixes KB936330 is not listed. WinVer.exe reports a Vista with Service Pack 1 installed.

WinVer report
WinVer report

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