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How to use a retail Windows 7 Professional license key to upgrade an installed Windows 7 Home Premium machine

I have windows 7 Home premium 'Geniun' , can i upgrade it to Professional or Ultimate by inserting the key of the new windows and install the updates required ??

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migrated from stackoverflow.com Mar 22 '11 at 11:00

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marked as duplicate by Kyle, ChrisF, BloodPhilia, Moab, Nifle Mar 22 '11 at 15:22

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I'm sure this a duplicate, but I can't find it right now. –  ChrisF Mar 22 '11 at 11:07
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1 Answer 1

up vote 0 down vote accepted

Yes you can upgrade without reinstalling or using a disk. Just run anytime upgrade and enter your key.

Go to Control Panel (icon view) > Windows Anytime Upgrade.

No, simply changing the key will not upgrade the PC to Ultimate.

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thanks... i though i could Just change the KEY then windows will install updates automatically... –  MuniR Mar 25 '11 at 20:03
    
Partial credit to @moab didn't even notice you edited, thanks! –  Kyle Mar 25 '11 at 20:13
    
Cheers mate!... –  Moab Mar 25 '11 at 23:13
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