Product key invalid after using it in Windows 10 but returned to 8.1

Similar Questions

• Product key cannot be used to activate windows on this computer

  When I put my cd key, it says «product key cannot be used to activate windows on this computer, and I used the key provided with my CD...» How can I solve this problem? : \

  Parcial Produto chave: M6T89
  Estado da licença: calculated
  Razão da calculated: 0xC004F009 (Contrato tolerancia tempo).

  How to activate Windows 7 manually (activate by phone)

  1) click Start and in the search for box type: slui.exe 4

  (2) press the ENTER"" key.

  (3) select your "country" in the list.

  (4) choose the option "activate phone".

  5) stay on the phone (do not meet all the automatic guests) and wait for a person to help you with the activation.

  (6) explain your question clearly to the support person.

• Windows 8 Pro update product key cannot be used to activate Windows after an installed cleaning

  Hi guys,.

  I bought a Windows 8 Pro Upgrade and received the product key I used to download and run a clean install to my laptop using a USB Flash drive (format my HD then install). But now, in my new installed Windows 8, I can't use this product key to activate Windows as it says that the key is for an upgrade, not a clean install. I was not aware of this problem when I did the clean install. So, how can I activate my Windows now?

  It! s a upgrade, you need to UPGRADE your existing system. New installation is not supported. I'm sorry.

  This is simply not true.

  If you had a hardware problem and you will need to re - install Windows 8, you can do this by using installation media that the wizard allows you to create (or installation media that you ordered, if you chose to order discs).

  If you don't have installation media, you can re - install your older version of Windows and rerun the upgrade.

  Whatever it is, you will need the product key you received when you paid for Windows 8. If you choose to do a clean install of Windows 8 from the installation media, you will also need to call Customer Service for help activating your copy of Windows.

  Kind regards

  Ben Herila

  Program Manager | Windows Server

• How do I display the product key number b & use to activate Windows 7?

  I got the qa message on my Dell laptop. Windows 7 Edition Home Premium that I had to activate my Windows using my product key. I wore my glasses to 20-20 & used my magnifying glass & writing down the product key.                     I checked the # 3 times!  Every time, all the 6 times I entered the # Microsoft said that I had entered man # invalid! 1 Lady even said there were 25 numbers & letters & I were entered in 26. She foolishly told me that she had the # on his computer, but she couldn't tell me what # was wrong!  The 3rd time I called the supervisor this manipulation my call tried to make me buy an anti-virus for 1 year, $99 & 2 years program, a discount of $149!  I know computer, software & hardware companies work together to tear the s Comsumer for their benefit!

  Please help me solve this computer problem!
  Thanks, MILTON KENT CHALIFOUX

  Please run the Microsoft Genuine Diagnostics Tool then copy and paste the results into an answer here for further analysis:
  http://go.Microsoft.com/fwlink/?LinkId=52012

• Product key does not work - had premium windows 7 but I have now after the ultimate update

  Someone help me please!

  I'll give you as much information as possible! I'm running on 64-bit and I had to erase my entire hard drive and re install windows (which took forever).  My product key is legitimate too!

  If after you have reinstalled windows 7 from USB, my computer went from home premium to ultimate windows and now my product key no longer works. So, what can I do? And if there is something I can do, can someone explain this in simple instructions!

  Well, the the ei.cfg delete statements created an all-in-one installed, start just so him again and perform a new installation, make sure that you select Home Premium during installation.

  Boot from your installation media:

  http://Windows.Microsoft.com/en-us/Windows7/start-your-computer-from-a-Windows-7-installation-disc-or-USB-flash-drive

  OR

  How to load BIOS and change Boot Configuration

  Windows 7 starts as it normally does in the environment of installation, the only difference this time is, we'll give you a choice to select the edition of Windows 7 you want to reinstall.

  

  Select the edition of Windows 7, you have a license for and proceed with the installation as usual.

• Error activation product key has been used already on Windows Server 2012.

  Original title: Activation error

  Two days ago, I installed windows server 2012 on my PC... It has been corrupted because of virus on my USB key that I reinstalled it twice but both times, it has been corrupted... when I installed it third time Activation has failed, it is said that this product code was used on another pc... no activation now please help me... and one thing I've never done any material change

  Try the phone activation, you may have to do during the week:

  1. press the Windows key + X , and then click run, and then type: slui.exe 4

  2. then press the ENTER"" key.

  3. Select your "country" in the list.

  4. choose the option "activate phone".

  5. stay on the phone (do not select/press all options) and wait for a person to help you with the activation.

  6. explain your problem clearly to the support person.

• I cannot activate my windows Vista, says the product key already in use

  I reinstall my windows vista, when I try to turn it on, pop up and says... you type the product key is already used... I don't remember copy my drive to vista... or install another computer... what I'll do... ?

  Activate Vista by phone:
  http://www.Vistax64.com/tutorials/84488-activate-Vista-phone.html

  NOTE:
  If the activation service informs you that she has failed and cannot help with activation, thenSTAY ON THE LINE and your call will be transferred to an operator of activation which will help you to activate your copy of Vista. The operator will give you all the numbers to ID of Confirmation if they accept that your copy of Vista is legitimate.
  NOTE: The operator just explain your situation and what you did to require activation. (EX: hardware upgrade, installed Vista on a new computer after uninstalling it from the old one, etc...)

  For the benefits of others looking for answers, please mark as answer suggestion if it solves your problem.

• Windows 7 Professional 64 bit product key cannot be used?

  Well, I bought a legitimate copy of Windows 7 Professional 64 Bit and I try to update my PC after installing on the new PC to my father that I built for him. When I installed it on my gaming PC, everything was fine, but now I'm doing it on my work PC and it comes up saying that the key cannot be used on this computer! What! And yes the key that I use IS the one that came with my Windows software. It is NOT for the office, but for Windows 7! What is the PROBLEM! When I bought this copy of Windows I wanted to use it on several PC in our House. Product key should work whenever I use it! I paid for this thing, and the key is legitimate! And I won't go to the table more of 100 to 200 dollars for ANOTHER copy of windows just if I have a product key to be used; It's ridiculous!

  you may not use the software on any other computer.

  You agreed to the end user license agreement when you install. André has repeated the first part of the above agreement. Whether you like it or not, these are the conditions of the license. You cannot use the same key on multiple computers.

• Product key for win 8 doesn't work no-error: this product key cannot be used to install a copy of windows retail.

  I bought a copy of windows 8 for the upgrade to windows 7 from the Microsoft store. I need to reinstall the hard drive on this machine, but when I download the installer of windows 8 on another machine to try to create a bootable USB I get an error message when I put in the product key (which I paid for) who says: this product key cannot be used to install a copy of windows retail.

  How can I get this problem?

  Hello

  Thanks for posting your query in Microsoft Community Forum.

  Ideally, there are two types of product keys: key to retail version key upgrade and full. The key to upgrade is used to upgrade the version of the operating system when you have the lower version of the operating system already installed on the system, for example, if you have already installed Windows 7 system, you can use the upgrade of Windows 8 to upgrade (override) currently installed Windows 7 to Windows 8. This product key cannot be used to download the installer of Windows 8 and create a bootable for installing Windows 8 from scratch.

  However, the key of the full version allows to download the installer of Windows 8 and create a Windows 8 boot disk to install a full version of the operating system.

  According to your description, you have reinstalled the hard drive on your machine and want to install Windows 8 by creating a bootable. Thus, you will always have the above error message while downloading executable files for Windows 8.

  There are two options you can try to install Windows 8 on your system:

  • Replace the key with a key to the version upgrade complete on the Microsoft Store and follow the procedure as you said in your post. You will not get the error message given.
  • If you have the Windows 7 installation media, you can try to install Windows 7 on the reinstalled hard drive. After activating this operating system, you can try to upgrade to Windows 8 by using the product key that you have already purchased.

  Hope this information is useful. If the problem still persists, please post back for further assistance, we will be happy to help you.

• Cannot activate Windows, the product key already in use

  Original title: product key already in use.

  Recently, my computer crashed (power).  Try to avoid problems with my hard drive, I bought the same computer exactly on the line.  I installed my old hard drive on the newest computer and all is well... Except, when trying to activate my Windows Vista Ultimate OS I get the error message "The key of product already in use" Microsoft site confirms that the product key is authentic, but still will not let me activate.  All solutions?

  Your old computer had a "Retail" or "OEM" of Windows installed version?

  OEM versions are related to the 1st motherboard they are installed and can not be activated on another motherboard. The only exception is the 'mother' is exactly the same make / model / part number as the original motherboard.

  Commercial versions can be moved from one computer to another without problem except that the the phone activation may be required.

  How to activate Windows 7 or Vista manually (activate by phone)
  http://support.Microsoft.com/kb/950929/en-us

  1) click Start and in the search for box type: slui.exe 4
  (2) press the ENTER"" key.
  (3) to select your "country" you are in the drop-down list.
  (4) choose the option "activate phone".
  (5) stay on the phone * do not select/press any option * and wait for a person to help you.
  (6) explain your problem clearly to the support person.
  (7) the person must give you a confirmation ID, copy it down on paper,
  (8) check that the ID is correct in reading the support person.
  (9) to enter the ID number, then click 'Next' to complete the activation process.

  Activation and registration of a Microsoft product
  http://support.Microsoft.com/?kbid=326851
  Windows activation: (888) 571-2048
  (888) 725-1047 or 800-936-5700

  What's the relationship between activation and genuine Windows?
  http://Windows.Microsoft.com/en-in/Windows7/what-s-the-relationship-between-activation-and-genuine-Windows

  What is the validation, and how does it work?
  Windows 7: http://windows.microsoft.com/en-us/windows/help/genuine/what-is-validation?os=win7
  Vista: http://windows.microsoft.com/en-us/windows/help/genuine/what-is-validation?os=winvista

  Authentic Microsoft software program privacy statement
  What data is collected?
  http://Windows.Microsoft.com/en-us/Windows/genuine/privacy-statement

  -Product key of letters and numbers-

  Not confused the letter B with the number 8, the letter Q with the letter O.
  the letter G and the number 6.

  A, E, I, O and u are not used.

  ----------------------------  Alternatives -------------------------------------

  To enable the use of the phone

  1. open Activation of Windows by clicking on the Start button, right click on computer, clicking Properties.
  then by clicking on activate Windows now. ?

  2. click on show me other ways to activate.

  3 type your Windows 7 product key, and then click Next.

  4. click on use the automated telephone and then click Next.
  If you are prompted for an administrator password or a confirmation, type the password or provide confirmation.

  5. click on the location nearest you from the drop-down list, and then click Next.

  6. call one of the available phone numbers listed. An automated system will guide you through the activation process.

  7. When prompted, enter the installation ID that is listed on your screen in your phone keypad.

  8 Note the confirmation ID the phone system gives you.

  9. under the terms of step 3, type the confirmation ID in the space provided, click Next, and then follow the instructions.

  10. If the activation is not successful, stay on the line to be transferred to a product activation agent who can help you.

  How to contact a Microsoft Product Activation Center by phone
  http://support.Microsoft.com/kb/950929

  Activation and registration of a Microsoft product
  http://support.Microsoft.com/?kbid=326851
  Windows activation: (888) 571-2048
  (888) 725-1047 or 800-936-5700

  Microsoft Activation centers worldwide telephone numbers:
  http://www.Microsoft.com/licensing/existing-customers/activation-centers.aspx
  (This site is for activating Volume License, but if you call, they will help you)

  The phone number is not working:
  Microsoft Worldwide contacts: http://www.microsoft.com/worldwide/default.aspx

  Register Windows 7
  http://Windows.Microsoft.com/en-us/Windows7/help/register
  Register Windows 7 and you automatically receive a series of three welcome to Windows e-mails
  filled with tips, creative tips and other information to you help get the most out of Windows 7.
  You also get a subscription to the monthly newsletter of Windows Explorer,
  where you will find other tips and tricks, as well as special offers.

  Learn about Activation:
  http://TechNet.Microsoft.com/en-us/library/ff793423.aspx

  J W Stuart: http://www.pagestart.com

• Windows Vista tells me that my product key is already used and he locked.

  Vista ultimate Windows... Hi, the product key has been used. Used by me!

  Hey, shot to the top of the laptop to see a dialog box indicating that the product key is used and it is locked. I use the key it's mine. What should I do?

  Try activating by phone and see what you get messages.  Click on start and type "slui 4", then follow the instructions.

• Error - product key is in use. Unable to activate Windows Vista.

  Original title: activate windows.

  the system notifies my to activate my version of windows, when I followed the procedure, a message with the error code to show me that my product key is in use.

  wait for the amiable assistant yor

  concerning

  This happens often because he sees it used already on your own computer (it can not make a difference).  If you mean that you can not activate automatically, try to do it manually:

  To activate manually, go to start, search, and type in slui 4 enter.  Enter your country and press Next.  You will be on a screen with a phone number and a bunch of codes below.  Dial the number and browse automatic guests until you get to a human being.  Have your handy product code because it will be asked.  Explain the situation, but it's the same PC and only installed on this PC.  They should give you a code to enter on this screen to activate Vista.

  I hope this helps.

  Good luck!

  Lorien - MCSA/MCSE/network + / has + - if this post solves your problem, please click the 'Mark as answer' or 'Useful' button at the top of this message. Marking a post as answer, or relatively useful, you help others find the answer more quickly.

• Error of activation 0xC004C003 for Windows Server 2008 R2 Standard key: "the activation server determined the specified product key is in use".

  I installed Windows Server 2008 R2 Standard as a test version of an iso download got on the product site in Ms. In the meantime, I bought the software. Once the software has been delivered, I tried to activate with the key provided me with the software sent from Microsoft. I get... "the activation server determined that the specified product key is used" and throws the error asOxC004C003code. What gives here? They just sent me the key? I need to get this fixed as soon as POSSIBLE.

  Here is the Vista Forums.

  http://www.Microsoft.com/windowsserver2008/en/us/forums-blogs.aspx

  They will help you in the above Forums Windows Server 2008.

  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  Here's what that means for Vista:

  http://support.Microsoft.com/kb/951287/en-us

  0xC004C003 error code

  The activation server determined that the specific product key is in use.

  This error code indicates that the product key you entered has already been activated, and you have to get a different product key.

  See you soon.

  Mick Murphy - Microsoft partner

• Windows 7 Home Premium OA product key can be used only with the recovery disk?

  I bought an Acer laptop, he arrived with Windows 7 Home Prem OA sticker behind. I've heard, if you want to reinstall windows, we can only use Acer Recovery Disc for this product keys? Is this right? Can I use any other Windows 7 Home Prem CD and install it and then I put the product key of the laptop, it can also?

  Thank you

  You can use a disk from Windows 7 Home Edition Premium authentic retail.

  There is no need to separately download OEM or retail of Windows 7 RTM installation DVD ISO, as the release of Windows 7 installation can be easily converted using simply the correct product key (for example OEM_SLP product key can convert an installation of Windows 7 at retail in OEM version), as issued by the OEM product keys has a different basis of the retail product key. For ISO of DVD images, the only difference between a Windows 7 RTM retail ISO and ISO of OEM of Windows 7 RTM is in position of EI.cfg file [channel], which specifies the sales channel to retail or OEM.

• This product key cannot be used to install a version of windows 8

  I bought a new computer dell laptop and you want to install windows 8 again. It came with Windows 8 Core with is the unique language of 64-bit

  I downloaded the windows Upgrade Wizard 8.

  Then I discovered my product key with keyfinder.

  I ran the upgrade wizard then copied the product key and it shows the message - this product key cannot be used to install a version of windows 8

  I ran windows Update and it allowed me to download the update, which means my Windows 8 is authentic then why I am not able to install windows 8.

  I'll be able to install the kernel of windows 8 with Windows 8 iso pro?

  Hello

  Thank you for contacting Microsoft Community.
  Windows 8 that came with your PC is OEM type license and is one you want to install the retail type license. Two licenses have different installation keys, so commercial version will not accept EM key and vice versa.
  In addition, Windows 8 Pro key is different from Windows 8 "Core" key. You may not use the button either.