Update rollup 2 for Exchange 2010 Service Pack 2 (KB2661854) ended prematurely

When you are trying to install Update rollup 2 for Exchange 2010 Service Pack 2. The setup will stop and display the above image.

This is due to UAC and you will need to run the update as administrator. You normally do this by right click the exe and select “run as administrator”

But this can be as this update is not a exe but a msp file.

To fix:

I have download the update rollup to c:\installs

1)Run a command prompt as a administrator (Find the command prompt in the start menu and right click it and select “Run as administrator”)

2) Change to the installs directory and execute “Exchange2010KB2661854-x64-en.msp”

The update rollup should install successfully. It make take a long to complete as is has to generate a lot of .net code and images

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