• Win 7 Serial Key
• Check Which Win 7 Serial Key I Have

Selling my Windows 7 as used to someone, however, I have lost track of whether the product key is still used on an old PC of mine.

Is there any quick way to check whether a product key has been used or not? (Without going through the install and activation process).

N.B: It's all a legitimate purchase from Microsoft!

Jul 15, 2014  Windows 7 Product Key Checker is a feather-light and portable piece of software that verifies product information based on the Windows product key entered. Windows 7 and Windows Vista or their server variants have a new graphical user interface (GUI) that allows user to easily change or re-enter the product key (aka serial key code number or cd-key).

Win 7 Serial Key

EDIT: I have found a piece of software which checks if the product key is valid, but not sure if the information displayed shows if the product key is already activated (refer to screenshot section on the link).. The link to the software I found is at http://www.softpedia.com/get/System/System-Info/Windows-7-Product-Key-Checker.shtml

• What I was hoping to find with ShowKeyPlus was the Windows 7 key which would have been in Windows.old. Naturally, when I upgraded, I ran into odd/ends problems and went with a clean install after the upgrade. Of course, this left not Windows.old from the Windows 7 upgrade, but Windows.old from the Windows 10 install.
• What I was hoping to find with ShowKeyPlus was the Windows 7 key which would have been in Windows.old. Naturally, when I upgraded, I ran into odd/ends problems and went with a clean install after the upgrade.
• How to test a product key to be genuine? Hi, I've bought a Vista key online, not from Microsoft. If you are like me and have a licence key, but you don't know what type it is (retail, OEM. If you can't activate Windows 7 with this product key try this! 1.Open start type in slui.exe 4 2.Select your country.
• Activate Windows 10 Using Windows 7, 8 or 8.1 Product Key. Activation helps verify that your copy of Windows is genuine and hasn’t been used on more devices than the Microsoft Software License.
• Try Windows 7 Product Key Checker or Microsoft PIDX Check (note: not actually a Microsoft product). Use them at your own risk, though. Since at least PIDX Check seems to have originally been written for use with activation cracks, my first concern would be that it might try to 'leak' the product key to some third party, so you may want to run it in some sort of sandbox and make sure it cannot access the internet.

2 Answers

• Go to Control Panel
• Click System and Security
• Click System
• In the bottom-right corner click Change Product Key
• This verifies the key without having to start a Windows installation

Check Which Win 7 Serial Key I Have

You can use a utility like

on your machines and compare them.

Unless you mean it may be used elsewhere and you have no idea where

protected by Community♦Jan 11 '18 at 16:04

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