Installation of E2K7 SP1 RU8 failing Error 1603

Topology
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Exchange 2007 SP1 RU 8

Error
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Exchange 2007 SP1 RU8 installation is failing with Error 1603
Update Rollup 8 for Exchange Server 2007 Service Pack 1 (KB968012) 8.1.375.2' could not be installed. Error code 1603. Additional information is available in the log file x:\xx.log.

Resolution
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Changed to ExecutionPolicy setting to RemoteSigned by running following cmdlet.

Set-ExecutionPolicy -ExecutionPolicy RemoteSigned.

All scripts that are locally created will run. Scripts that are downloaded from remote locations, such as the Internet, that cannot be trusted, will not run. This is the default script execution mode.


Script Security : http://technet.microsoft.com/en-us/library/bb125017.aspx