Exchange 2010 SP3 RU19 - Error 1603

Exchange 2010 SP3, need to install rollup.  I have tried both rollup 19 and both give an event error 1024 with an error: Update 'Update Rollup 19 for Exchange Server 2010 Service Pack 3 (KB4035162) 14.3.382.0' could not be installed. Error code 1603.  I also tried RU 9 with the same issue.  

Can't seem to figure out what it is the problem.
David BarmanAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Are you using an elevated command prompt, to install the rollup ?

(e.g. UAC is enabled)

Open a CMD prompt with Run As Administrator, and execute the rollup from local C: drive.
viktor grantExchange ServersCommented:
Hi David,

Try to download again the rollup to a different location and run again the setup.

David BarmanAuthor Commented:
Oddly enough I noticed RU 4 had been installed by Windows update. On a chance I uninstall it and afterwards I was able to install RU 19.

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David BarmanAuthor Commented:
this was the solution.
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