08-03-2015 10:25 AM
81 1234
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  1. iamtim's Avatar
    So if I skipped the upgrade process (tried to go straight to a clean 10 install from an ISO image), I need to go back to windows 7 and reactivate it, go through the upgrade process and make sure it gets activated and associated with my MS account, THEN I can try a clean install and hope all goes smoothly from there?
    Yes.
    a5cent likes this.
    07-30-2015 08:58 PM
  2. a5cent's Avatar
    So if I skipped the upgrade process (tried to go straight to a clean 10 install from an ISO image), I need to go back to windows 7 and reactivate it, go through the upgrade process and make sure it gets activated and associated with my MS account, THEN I can try a clean install and hope all goes smoothly from there?
    Yes. Ehem... one minute too late :-) Thx Tim!

    Can I do the "official upgrade" from the ISO disk I have by simply choosing the "upgrade" option instead of "custom" or whatever it was that I chose?
    I have no idea what the term "official upgrade" means.

    If you're asking if it's possible to do an in-place upgrade using DVD or USB installation media, the answer is "yes".
    iamtim likes this.
    07-30-2015 08:59 PM
  3. Grimlock's Avatar
    It doesn't matter if they were reserved or not, it only matters if they were upgraded. If you didn't do the in-place upgrade through the icon on a given machine, Windows 10 won't activate on that machine. Once you do the in-place upgrade through the icon, then Windows 10 will activate.
    Not true- I activated two of the machines without the in-place and by using the ISO (as many others have). But I wonder if had something to do with using my MS account, because I did not login on the third machine and used a local account.

    Today I was able to get the third machine to activate by using the win 10 media creation tool and doing the in-place upgrade.
    07-30-2015 09:21 PM
  4. Lumious's Avatar
    This has been a HUGE disaster/pain in the *** for me. I'm like THIS close to reverting all my devices to Windows 8.1 Pro and just staying there. At least I had an OS that was fast and didn't have to deal with all these headaches. So everything went fine with upgrades from 8.1 to 10 on every device. One of them I had to force the upgrade through media creat. tool. But, I don't want an upgraded version of 8.1 to 10 with all the old files, partially deleted crap, and programs etc, etc, etc. I, like most us, want a nice clean installed Windows 10 that's fast and snappy like its brand new. So yesterday I tried to do a reset on my laptop since I figured hey that shouldn't be a problem, its an option that is included in windows 10, why wouldn't it work. I got to 99% and I got the BSOD with :( face saying "your pc ran into a problem and will reboot now: error no bootable device" So now I was screwed and had to reinstall Windows 8.1 from scratch which im currently on right now. I figured something went wrong, or this is just because this computer is so old (2009). So I have windows 10 installed on my main pc from an upgrade, and again its slow bc of the upgrade. So I tried this process but only selected to reset and just delete files (not clean the drive) this time. Same problem, windows ran into a problem and got stuck on a continuous reboot cycle. Now I am installing 8.1 pro on my main pc from scratch. On my surface pro 2 im downloading the Media creat tool so hopefully I can install windows 10 from scratch and because I went through the upgrade process on both PCs already it should magically activate. But somehow I highly doubt that's going to happen. If not then I will have to reinstall 8.1 pro AGAIN and just stay there because im not settling for an upgraded version of windows 10 that I cant clean install nor reset or refresh. ugh.

    (note: I asked @surfacesupport on twitter about clean installing windows 10 on SP2 and they said the only path supported is upgrade and I will run into activation issues if I clean install. I clarified that I already upgraded and want to do it for performance reasons, again they repeated, upgrade is the only possibility.)
    tbhCKR likes this.
    07-30-2015 09:26 PM
  5. iamtim's Avatar
    Not true- I activated two of the machines without the in-place and by using the ISO (as many others have). But I wonder if had something to do with using my MS account, because I did not login on the third machine and used a local account.

    Today I was able to get the third machine to activate by using the win 10 media creation tool and doing the in-place upgrade.
    It probably does have something to do with your account, then.

    All I can say is what I've read, and what I've seen on the 5 machines around me running Windows 10 (2 of which I installed, 2 of which my co-worker installed, 1 of which my step-son installed). Which is... if you do an in-place upgrade, Windows 10 will be activated on that machine. You can then do a clean install from installation media, skipping every prompt for a CD key, and your clean install will also then be activated.

    It's not supposed to work any other way; if, for some strange alignment of cosmic circumstance it does, consider that a fluke and a bonus and be happy.
    Last edited by iamtim; 07-31-2015 at 10:40 PM.
    a5cent likes this.
    07-30-2015 09:58 PM
  6. Lumious's Avatar
    There are no prompts for a CD key when doing an in-place upgrade via windows update or choosing upgrade now in the media creation tool, I think you mean if you install from a CD or USB you have to skip the prompts there.
    07-30-2015 10:22 PM
  7. EL620's Avatar
    Direct upgrade from windows 8.1.
    All I did was mounted the ISO, Load the windows 10 setup, Skipped updates and didn't keep any files.
    My windows 8.1 key was replaced with the insider pro key but windows remained activated. (checked with key finder)
    Preview builds off. (successful clean upgrade)
    07-30-2015 10:57 PM
  8. krague17's Avatar
    It will only prompt for the key if you do a clean install from USB or DVD that deletes your original Windows partition. But if you did the Win 7/8 to 10 upgrade you can just skip through when it asks for keys and it will automatically be activated when you log in the first time. What I'm not sure of is if you have to log in using a Microsoft ID or if you can do it with a local account.

    I also would think to do a real clean install with reformatted partition your Windows key would have to be stored in the BIOS for it to know while it's installing. The installation USB/DVD won't take your old Windows 8 or 7 keys during the installation and it seems the key that is provided after activating Windows 10 is a generic key. Does anyone know what to do if your key isn't embedded in the BIOS?
    07-30-2015 11:00 PM
  9. krague17's Avatar
    I think some people are confusing "Clean Install" with something else.

    A clean install is when you either have a new hard drive with no partitions or you delete and recreate the partitions during the installation - reformat. A clean install will not contain any old folders or files on the drive.

    If you run the Windows 10 insallation while logged into Windows 7/8/10 it will install new copy of Windows 10 but will keep your old Windows files around under a windows.old folder and put the installation files into another folder. It won't delete/reformat the old windows partition like a real clean install. You will still end up with a fresh copy of Windows without any previous programs, personal files, or drivers but it will also have some folders that will remain after that will take up a lot of space. This should be fine for most people unless you need the disk space.

    The other method is to do a "Reset" through the Recovery section of the Settings screen. This will give you the option of keeping your personal files but will wipe out all previously installed programs, drivers, and settings. This will result in a fresh version of Windows 10 but will put your previous files in a windows.old folder.

    Just remember that in order to do an official clean install where your drive or previous Windows partition is reformatted you will need to have an upgraded Windows key. The only way to upgrade your key so it works for a clean install of Windows 10 is to do the upgrade from Windows 7 or 8 first. Hope this helps some people.
    jonahtrav likes this.
    07-30-2015 11:21 PM
  10. iamtim's Avatar
    There are no prompts for a CD key when doing an in-place upgrade via windows update or choosing upgrade now in the media creation tool, I think you mean if you install from a CD or USB you have to skip the prompts there.
    Right, my mistake. I edited my post above. Thanks. :)
    07-31-2015 12:13 AM
  11. Prathameshk's Avatar
    I have no idea why that shouldn't work. I've done it a few times on my wife's HP Ultrabook which contains the OEM license key in its UEFI BIOS. Worked fine.
    Thanx for your help my laptop w7 has activated now i'm installing drivers and then i'll update my windows and also i'll take precautions that i'll not do that mistake again
    Thanks again!!!!
    a5cent likes this.
    07-31-2015 01:00 AM
  12. JithinPrasad's Avatar
    Atlast Succesfully updated to 10 after a number of try via WU

    Now if i want to do a clean install can i use the "Install.esd" in Windows BT Folder to create a bootable media..
    07-31-2015 01:07 AM
  13. rohitsingh's Avatar
    Wow. So many people in panic!

    I would strongly recommend, read this: https://www.thurrott.com/windows/windows-10/4940/windows-10-tip-successfully-clean-install-windows-10

    And people who are complaining about a clean install versus upgrading by 'keep nothing' option, the old folder that gets created can be deleted as well. My understanding is that its also gets deleted automatically after a specific number of days.

    I 'upgraded' the same way and had no issues at all. Windows is activated.

    ​Hope this helps.
    07-31-2015 01:55 AM
  14. JITKR's Avatar
    untitled.png
    5+GB Ram in use. Nothing opened only some web pages.

    I did clean install from Windows 10 Enterprise ISO [MSDN]. Anyone facing same issue ? Also restart not working.
    07-31-2015 04:45 AM
  15. kenjancef's Avatar
    I did a clean install on my SP3, but I upgraded to Windows 10 first. I then did the clean install from a USB key I created using the Microsoft tool. I did the option to "Keep Nothing", and it wiped out the system and installed a fresh Windows 10. Activation was successful as well.

    My question is: I have 2 Windows 7 systems at home. I'd like to do the same to those, upgrade to Windows 10 then do the clean install... but if a serial number is attached to your Microsoft account, how does it handle more than one installation of Windows 10? Right now, it must see my SP3, but what if I do the same to one of my Windows 7 machines? Does it know to keep a separate key based on computer name? How does that work?

    Inquiring minds wanna know...
    07-31-2015 10:23 AM
  16. jdballard's Avatar
    What about just doing reset and choosing to delete all files and install a fresh copy of Windows (which is pretty much the same as clean installing)...has anyone attempted this successfully?
    I did exactly that. I received a new machine with Windows 8.1 on it at work the day 10240 released. I knew I couldn't clean install, so I used an old ISO of a previous build, upgraded 8.1 to whatever version of the Windows 10 preview ISO it was I had (don't remember the exact version but it was probably the last ISO before 10240) using the "keep nothing" option. I then updated to 10240, also using the "keep nothing" option. Been running that version ever since and it's running like a champ!
    a5cent likes this.
    07-31-2015 11:25 AM
  17. a5cent's Avatar
    ^ It's explained in the FAQ.

    The license key AND the identity of the hardware are both associated with your account.

    Your account can have multiple hardware ID/key pairs associated with it.
    07-31-2015 11:41 AM
  18. mjyumping's Avatar
    Not sure if this has been shared here already.
    This is a very helpful thread for those who want to understand how their system is activated and about clean installing.

    LINK:

    http://answers.microsoft.com/en-us/w...9-7b975611b73b
    07-31-2015 09:35 PM
  19. 07outback's Avatar
    I want to do a clean install, but I don't know which version to download o to a USB. I currently have the Pro version so do I download N or KN or what?
    07-31-2015 09:50 PM
  20. mjyumping's Avatar
    I want to do a clean install, but I don't know which version to download o to a USB. I currently have the Pro version so do I download N or KN or what?
    I had 8.1 Pro, so I installed the Windows 10 Pro, and its sucesfully activate itself. Just make sure you upgrade first to 10 and wait to activate itself, before you clean install.
    07-31-2015 09:54 PM
  21. 07outback's Avatar
    I had 8.1 Pro, so I installed the Windows 10 Pro, and its successfully activate itself. Just make sure you upgrade first to 10 and wait to activate itself, before you clean install.
    No problem activating on the upgrade.
    08-01-2015 06:10 AM
  22. anon(5383410)'s Avatar
    I already upgraded through Windows update not realizing my version of 8.1 was the Home edition. So when I upgraded through Windows update I got Windows 10 Home which I CAN'T use with my job's VPN because it doesn't have domain join services. Odd since that obviously wasn't the case in 8/8.1 since I'd been using it with my job's VPN since it was released.

    Anyway, can I do a clean install with the Pro ISO over my current home version even though I already upgraded?
    08-01-2015 08:04 AM
  23. Prathameshk's Avatar
    I already upgraded through Windows update not realizing my version of 8.1 was the Home edition. So when I upgraded through Windows update I got Windows 10 Home which I CAN'T use with my job's VPN because it doesn't have domain join services. Odd since that obviously wasn't the case in 8/8.1 since I'd been using it with my job's VPN since it was released.

    Anyway, can I do a clean install with the Pro ISO over my current home version even though I already upgraded?
    Yes but u will need a product key to activate pro version...
    anon(5383410) likes this.
    08-01-2015 08:06 AM
  24. maktaba's Avatar
    Okay so after I clean installed Windows 10 from ISO files, it could not get activated using Windows 8.1 key which I had got using Magical Jelly Bean KeyFinder program. So I downloaded Windows 8.1 ISO files from Microsoft and installed it and the activation worked. I then downloaded Windows 10 ISO files again and installed it while in Windows 8.1 (no clean install this time), and once installed the KeyFinder program showed a different but working key this time, which I used to clean install Windows 10 and activate it finally.
    08-01-2015 08:08 AM
  25. anon(5383410)'s Avatar
    Yes but u will need a product key to activate pro version...
    Awesome. I have my product key.

    EDIT: Oddly enough, the program I use to get my product key actually still lists my OS as Windows 8.1. :/ Then again I guess it isn't that odd since w10 didn't exist when they wrote it.

    EDIT 2: This will not work. I get the message "this key doesn't work with this version of windows".
    Last edited by offbeatbop; 08-01-2015 at 08:56 AM.
    08-01-2015 08:35 AM
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