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I installed windows 7 without service pack 1 and now, when I'm trying to input service pack 1 key, I get an error. Can I activate it when I simply install service pack 1 or I need to reinstall it from image with service pack 1?

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Was this a fresh install? Is your key from an UPGRADE instead of a full retail? Is the Key from OEM (came with your computer)? Any chance your key is for Starter/Home/Pro/Enterprise and you installed a different version? – nerdwaller Nov 28 '12 at 15:17
Yep, fresh install, key is from dreamspark premium. – user983302 Nov 28 '12 at 15:19
I understand that it's from Dreakspark, but what for version of windows ("dreamspark premium" is vague)? Which did you install? Might as well try JustinD's suggestion to see if it works. Shouldn't take terribly long. – nerdwaller Nov 28 '12 at 15:23
I installed from iso I burnt about a year and a half ago which I took from MSDN AA (previous name of dreamspark). – user983302 Nov 28 '12 at 15:33
You need to update to Service Pack 1 to use a Service Pack 1 Windows 7 authentication key. Why don't you simply use the key you recieved when you downloaded the original iso? – Ramhound Nov 28 '12 at 15:37
up vote 1 down vote accepted

Here, try downloading the Windows 7 service packs manually. Then activating using your key.

I don't know if you have either a 32-bit OS or a 64-bit, so here's both.



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After I installed service pack, I could activate windows. – user983302 Nov 28 '12 at 22:45
Alright, sounds good. – JustinD Nov 29 '12 at 13:23

I ran into this recently when using Microsoft SA volume licensing. It seems that the ISO needs to be Windows 7 with SP1 or you will not be able to activate it. You should have no trouble finding that install if you look hard enough.

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Hm, sounds bad. Strange politics from Microsoft - what is the difference between OS and OS with patch? – user983302 Nov 28 '12 at 17:25
Beats me. I burned several DVD's before I figured this one out. The straight Win 7 Pro disc resulted in a message to the effect of "This version of Windows 7 cannot be activated." We also have MAK versions available that require an activation server, which being a mostly Apple shop, we don't have. Very annoying. – Ian Atkin Nov 28 '12 at 18:54

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