A product key is a character sequence that acts as the license to a software product, and often required as proof of purchase. Also sometimes known as serial number.

learn more… | top users | synonyms

0
votes
0answers
39 views

Reinstall windows 10 with new build

I had Orginal Windows 8.1 and I just upgraded it to Windows 10 'build 10240'. Now, I doesn't get any updates like update to build 10586 (maybe you know why). I want to perform clean install of new ...
0
votes
1answer
142 views

How to upgrade from Windows 10 Home without product key to Pro

So, being the dummy I am, I installed Windows 10 Home over Windows 7 Pro. Right now, Windows 10 Home is unactivated because I can't use my 7 Pro key to activate 10's Home edition (I get error code: ...
0
votes
1answer
42 views

Clean install of Windows 10 OEM: license key issues?

I have been a Linux user after switching from Windows 98 and never looked back. However, a friend asked me to set up their brand-new Lenovo ThinkPad with Windows 10. I was totally startled at how ...
0
votes
0answers
109 views

Is it possible to use a Windows 10 product key to activate a Windows 7 installation?

This question is the opposite of the problem that most people have, and I haven't found a good answer for it yet. My company has custom hardware configurations on shipped systems, and we are ...
0
votes
0answers
63 views

Product key invalid after going from windows 7 to 10 and back again

I upgraded my Window 7 Home Premium to Windows 10, then went back to Windows 7 and now it says my product key is invalid for activation and I have 7 days to enter new key. Any idea how to correct ...
0
votes
1answer
375 views

Windows 7 Product Key for Download Windows 7 Disc Images (ISO Files)

I lost my Windows 7 Product Key , so I restored it by software as Belarc and NirSoft , both them gave my the same Product Key . Now I try to Download Windows 7 Disc Images (ISO Files) , and I asked ...
0
votes
0answers
106 views

Find Windows 7 Product key after windows 10 upgrade

I know a form of this question has been asked before but... A client of mine upgraded her pc from windows 7 to windows 10 more than 30 days ago. She hates windows 10 and wants windows 7 back on ...
0
votes
1answer
115 views

Reinstall Window 8 single language on a Dell preinstalled laptop

My Dell laptop came with Windows 8 Single Language 64bit, the below sticker having product key got erased. Contacted dell and they told product will be embeded inside Motherboard, I just need to run ...
0
votes
1answer
167 views

Changing product key on Windows 7 MSDN

How do I change the product key for a MSDN based Windows 7 Ultimate 64-bit PC? I am aware that if I had a retail version, then the process would be simple, namely Control Panel | System | Windows ...
0
votes
1answer
109 views

My Windows 7 Product Key does not match with my current windows version

let me explain Since I'd heard that Windows 10 was coming for free, I been crazy waiting for the notification to appear on my task bar, but nothing would happen. Two months ago I was surprised ...
-1
votes
1answer
570 views

How to find out which windows version my product key matches?

I retrieved my Windows 8 product key from the firmware but have no idea which version it's supposed to match. My Windows 8 cannot be booted into (hence the need to re-install in the first place) How ...
2
votes
1answer
120 views

How do I tell if a Windows 8.1 Product Keys is an OEM key?

My system has been upgraded multiple times. Latest was upgraded to Windows 8.1 Pro with media center. I would like to move the license. But I am not sure if I have still have an OEM Licensed ...
0
votes
1answer
229 views

Switch product key windows 10 home and pro

I've got today windows 8.1 pro on my workstation and windows 8.1 home on my laptop. I've upgraded each of them to windows 10 (pro on workstation and home on laptop) last month. However, I need now ...
0
votes
2answers
190 views

Use of same product key in Windows 7 different version

I'm using Windows 7 Home version. Recently I switched to Windows 7 Ultimate. Can I use the same product key that was given for Windows 7 Home version in newly installed Windows 7 Ultimate? If so, can ...
-2
votes
1answer
189 views

Windows 10 Product Key Expiration [closed]

Here's what my Windows 10 32-bit Enterprise Edition is showing via slmgr/xps method of activation check : What should i do ? Thanks
0
votes
1answer
95 views

Windows Product Key in Boot Menu

My Windows is corrupt now. There's some issue with the BCD. What I wanted to know was is there anyway, I can get to know the Product Serial Key through the Boot Menu ? As I guess, I'll be ...
-1
votes
1answer
103 views

If I delete pre-installed Windows 8.1, is it lost forever?

There's this Asus X200MA with fixed 2GB RAM and pre-installed Windows 8.1 . 2GB RAM + Windows combination makes a sad computer and a frustrated user. So I want to install Elementary OS Freya on it. I ...
0
votes
2answers
472 views

Windows 7 OEM product key isn't working

I have a problem with my Fujitsu Siemens Esprimo Mobile v6535 laptop. I got it from dump and the HDD was bad, so i replaced it. At the begining, i was using a non-genuine copy of windows (because the ...
-1
votes
1answer
150 views

Why won't windows 10 allow me to upgrade without first entering windows 7 product key?

Ok, so I am running windows 7. I previously upgraded to 10 smoothly, however I blue screened frequently due to my graphics cards being ancient and not supported. I rolled back to windows 7 for the ...
1
vote
1answer
375 views

Cannot refresh windows 8.1 after downgrade from windows 10

The computer started off as running windows 8.1 out of the box. When windows 10 was officially released, the computer was upgraded using a usb drive with windows 10 installation media, rather than ...
0
votes
1answer
245 views

Windows 7 Activation key stop working

I tried to upgrade to Windows 10 a few days ago. Something went wrong, and my computer began to operate extremely slow. After several unsuccessful attempts at troubleshooting, I decided to reinstall ...
0
votes
1answer
210 views

Windows 8 product key not working

was was running windows 8.1 for a long time on my laptop. Then a couple of weeks ago i installed windows 10 insider preview and used the product key that was provided by Microsoft to use with windows ...
0
votes
0answers
119 views

invalid product key windows 7

When I open computer properties and scroll to bottom, I saw that Windows activation told me that I have to activate my Windows, and changing the product key. It only given me 3 options for ...
1
vote
2answers
1k views

Unable to upgrade Windows 10 edition from Home to Pro

I have a Lenovo laptop which upgraded from Windows 8.1 Home to Windows 10 Home. I have a (legitimate) Windows 10 Pro key which I ran through the "Change Product Key" wizard. After a reboot I get an ...
-1
votes
1answer
127 views

Can I install Windows 7 from ISO then activate with key from DVD

If I download a legit windows 7 iso from here http://www.microsoft.com/en-us/software-recovery and I have a legit windows 7 installation DVD (retail, not OEM), can I activate using that product key?
1
vote
2answers
5k views

8.1 to 10 setup : Something happened > Setup has failed to validate the product key

Just like millions of other users, I'm attempting to upgrade to windows 10. I have a Dell laptop running 8.1, which had windows reinstalled once. That was because I swapped the HDD out for a SSD and I ...
2
votes
1answer
3k views

Windows 10 “Device Limit Reached”

I have Windows 10 installed on 3 laptops and only 1 of them can be activated. I checked the product keys and they are the SAME. All 3 of those laptops had their own product keys prior to the upgrade. ...
11
votes
4answers
49k views

Windows 7 product key does not work on Windows 10

I just did a fresh Window 10 installation from .iso files on the computer I was running Windows 7 on before. I have the original Windows 7 DVD's, with a valid key that I was using before. Now I tried ...
0
votes
1answer
237 views

How to enter product key for trial version of Office 2013

My new laptop came with a trial version of Microsoft office Professional Plus, this trial lasts for 30 days. So I found a website that sells the key I need, here is the link to the website: ...
0
votes
3answers
580 views

Activating Windows 8.1 after changing my hard drive

Two years ago I bought a laptop which came with Windows 8 already installed. Upgraded to 8.1 last year. The warranty expired a year ago. I got a new hard drive recently and installed it today. Made ...
0
votes
1answer
75 views

Can I re-install Windows 7 English with an activated product key for another language?

My computer came with Turkish Windows 7 Professional installed. So I wanted to install the English version. Is it possible to use the existing, activated product key on the box to install English ...
0
votes
1answer
79 views

Linux utility for recovering Windows CD Key from HDD? [closed]

I've got a Windows HDD and no access to a Windows machine but I have Ubuntu. What's a good Linux utility for recovering the CD Key from the Windows 7 installed on this drive?
2
votes
2answers
578 views

How to retrieve lost Windows 7 key (computer crashed)?

I was going through my usual day at work with my laptop,when it crashed,corrupted the drive,and rendered it useless,unless I reformat the drive itself. But,I somehow lost the disc and the product key ...
0
votes
1answer
657 views

How can I recover a Microsoft Office 2013 product key? [duplicate]

I have Office 2013 installed on one of my computers but I have misplaced the product key. It is not set up through my Microsoft account and I would prefer it not be. How can I recover the license key ...
3
votes
0answers
61 views

How can I extract the Windows 8 OEM product key when I can't boot to Windows [duplicate]

I have a Dell Inspiron laptop with preinstalled Windows 8, upgraded to Windows 8.1 which cannot boot now. I am able to get in recovery screen with an USB installation kit. In order to get the ...
0
votes
0answers
189 views

Recovering the Windows 7 Product key, from a system upgraded to windows 8

I have a system that was running Windows 7 and then, back when Windows 8 was cheap, was upgraded to 8 (now 8.1 + Media Centre via separate updates & additions). Now I come to reformat / reinstall ...
1
vote
1answer
345 views

Move HDD to another laptop, can't change Windows 7 product key

One of my clients returned to me a Dell Latitude laptop that runs Windows 7 Pro with an OEM product key (bad motherboard). Now, I have a laptop that is the same model (it is already set up with ...
0
votes
1answer
1k views

Retrieve/decrypt Windows 7 product key from Linux

I accidentally disconnected my hard drive while it was still running and corrupted my Windows 7 installation; I am now completely unable to boot into Windows. I have tried everything to try and repair ...
0
votes
1answer
75 views

determine the owner of the windows copy of a PC

Our team have several of Computers. and 3 product keys of windows 8.1 of that PC belongs to me. but i can't remember which machine I put them. how can i find the machine which my product key ...
1
vote
2answers
424 views

Recovering Windows 7 Product Key from Registry Backup

My SSD gave up a little while back and I would like to recover my Win 7 Product Key from the drive. Even using recovery software, I was unable to recover my Windows/System32/config directory which I ...
13
votes
2answers
4k views

Is it safe that everybody can see the Windows product ID?

Is it safe that everybody can see the Windows product ID? What is my CD key given the product ID?
0
votes
1answer
217 views

Asus Windows Vista Home Premium product key expired

I can't start my laptop in normal mode. It says that my product key is already expired and I need to type a new one. I have a product key on the back of my laptop, but it seems to be not valid. If I ...
0
votes
0answers
313 views

Windows 8.1 wont validate my product key

Windows 8.1 wont validate my product key - It worked up until today and now says I need to activate Windows and wont recognise my product key
0
votes
0answers
120 views

Windows xp prodcut key

I am trying to remove a product key from windows XP when creating a ghost (each pc can then add there own PK for that hardware) but I am coming against some problems. I have tried the following. ...
0
votes
1answer
535 views

How to find the actual product key of Microsoft Office 2010?

Where can I find the actual product key of Microsoft Office 2010 ? I use Windows 8 and When I try to open Excel 2010 unlicensed product message appears and need to 25 character input to open it . I ...
1
vote
1answer
2k views

Windows 7 activation failed, legal product key was used (HP 840 G1 laptop / clean install)

Problem Valid product key is not accepted after clean reinstall. What could be the reason of that and how to pass activation process ? Goal install & activate "clean" windows 7 professional ...
0
votes
1answer
111 views

Is there a way to find out what COA (Certificate of Authenticity) a computer has in Linux?

I’m working on making a script that will export all the specs of the computer that runs it. I can get all the information I need besides the COA (Certificate of Authenticity) that the computer was ...
0
votes
1answer
499 views

Unable to install Windows product key - error 0x80041015

I decided to install a proper product key for my Windows 8.1. I tried the PC Settings applet, but it refused to accept my key. I tried using slmgr /ipk ...., but got error WBEM_E_TRANSPORT_FAILURE ...
0
votes
0answers
35 views

Change SQL server back to a trial

I need to convert a SQL Server 2008 instance on a VM (which is licensed) back to a trial. What are the steps to do this? REASON for this: Need to give a VM with a custom solution on it to a 3rd ...
-1
votes
2answers
589 views

Will Visual Studio 2013 marry it's current product key to my account if I sign-in?

I just recently switch from using Visual Studio 2010 to Visual Studio 2013 at work. Visual Studio 2013 is registered with an MSDN product key that the company pays for. I am new to the concept of ...