Windows 10: How to downgrade Windows 10 from 1709 to 1607 Solved

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  1.    15 Mar 2018 #1

    How to downgrade Windows 10 from 1709 to 1607


    I have a rare problem with my system, where it freezes. I have a Ryzen CPU, and a search for this problem put me to an AMD Community post where several Ryzen users have experienced a similar problem, and some of them have worked around it in various ways and others report they're hosed.
    One suggestion was that there's a bug in the Creators Update and reverting back to an older version (i.e. 1607) solved the problem. So I thought I'd try that, at least temporarily.
    I'd like advice on how to do this.
    I can make a recovery disk of my present system (1709).
    But I don't know how to install 1607 and keep my settings and apps. I don't even know where to get 1607.
    My computer doesn't show any installed updates older than 1709. So reverting back to an older version won't work.
    Alternatively, could I clean install 1607 as a second OS in the boot loader. Since it's for an experiment, I wouldn't mind if I lose settings of apps, though it would be nice to preserve them.
    I'm currently downloading an ISO (unofficial) of 1511. I would try reverting to 1511 if anyone can vouch for its safety.
    Last edited by mrolle; 15 Mar 2018 at 00:12. Reason: More info
      My ComputerSystem Spec


  2. Posts : 6,437
    10 Home x64 (1709) (10 Pro on 2nd pc)
       15 Mar 2018 #2

    You cannot downgrade to an earlier version keeping your apps ands settings, it has to be a clean install I'm afraid.

    I'm currently downloading an ISO (unofficial) of 1511...
    That may be unwise if you don't trust the source.

    This third-party app generates the links required to download an ISO direct from Microsoft. You'll be able to get 1607 this way.

    https://www.heidoc.net/joomla/techno...-download-tool

    The site seems to be down at the moment, so try again in a little while. Or, if you can't wait, there is an archived copy of the page in the Internet Archive Wayback Machine, you can download the tool from there too.

    https://web.archive.org/web/20180222...-download-tool

    Edit: HeiDoc is back up now.
    Last edited by Bree; 15 Mar 2018 at 10:46.
      My ComputersSystem Spec


  3. Posts : 16,417
    windows 10 professional version 1607 build 14393.969 64 bit
       15 Mar 2018 #3

    What progress did you make in working up the freezing?
    Had you tried a bootable Ubuntu /Linux drive?
    Had you tried clean boot?
    Had you tried safe mode?
      My ComputerSystem Spec


  4. Posts : 6,437
    10 Home x64 (1709) (10 Pro on 2nd pc)
       15 Mar 2018 #4

    zbook said: View Post
    What progress did you make in working up the freezing?
    That would be the preferred solution, if only for the fact that 1607 is at 'end of support' within weeks and will almost certainly try to update to 1709 immediately. Quite separately from windows update, Microsoft are pushing the Update Assistant onto all previous versions.

    zbook is best placed to help you there.
      My ComputersSystem Spec

  5.    17 Mar 2018 #5

    Installing 1607 as second OS?


    Thanks for the links to 1607.

    When I download 1607, can I do an install as a second OS, and how do I do this?
    I assume that I would choose D: as my system drive for the install, so it would not affect the 1709 Windows on C:. But will it make two items in the boot menu automatically, or do I have to do something extra.

    If 1607 will try to immediately upgrade to 1709, that would defeat the purpose of installing 1607. I can disconnect my Internet connection long enough to tell 1607 not to do automatic updates. Will this be sufficient? I suppose I could reconfigure my network on the 1607 to be unconnected to the Internet, so long as it is still connected to my LAN.
      My ComputerSystem Spec

  6.    17 Mar 2018 #6

    I've now got my .iso file for 1607. I tried mounting it with PowerIso and running its setup.exe, but in this case it only gives me the option to keep nothing. I've burned a DVD and I booted from it into the windows setup. There's a button called Install, which I don't want to select yet, because I don't know what options I will be offered (if any) or whether it will do a clean install on the spot.

    I've read online that I will get to a place to select a Custom install. If I select my existing D: drive as the location, will it erase the D: and then install the system there? Or should I create a new E: partition with enough space and install it there?
      My ComputerSystem Spec


  7. Posts : 6,437
    10 Home x64 (1709) (10 Pro on 2nd pc)
       17 Mar 2018 #7

    mrolle said: View Post
    When I download 1607, can I do an install as a second OS, and how do I do this?
    It is against the EULA to have two copies of Windows installed at the same time on a single machine with just the one license. Strictly speaking, you are expected to buy a license for the second install.

    As to how to dual boot, there's a tutorial...
    Dual Boot Windows 10 with Windows 7 or Windows 8

    I don't use dual boot. When I want to use an earlier version on my test PC (system two in my specs) I restore a system image. That way there is never more than one Windows installed at any time. You could also stay within the EULA by swapping out the current HDD and replacing it with another one and installing 1607 on that.

    If 1607 will try to immediately upgrade to 1709, that would defeat the purpose of installing 1607. I can disconnect my Internet connection long enough to tell 1607 not to do automatic updates. Will this be sufficient?
    No, the best way is to hide the update called 'Feature update to Windows 10, version 1709'. You will also need to hide KB4023814 which installs the Update Assistant.
    If you're currently running Windows 10 Version 1507, Version 1511, Version 1607, or Version 1703, you can expect to receive a notification that states that your device has to have the latest security updates installed. Windows Update will then try to update your device.
    https://support.microsoft.com/help/4...stall-the-late

    Hide or Show Windows Updates in Windows 10


    I still think the best solution is to see if zbook can help you sort out 1709.
      My ComputersSystem Spec


  • Posts : 6,437
    10 Home x64 (1709) (10 Pro on 2nd pc)
       17 Mar 2018 #8

    mrolle said: View Post
    I've now got my .iso file for 1607. I tried mounting it with PowerIso and running its setup.exe, but in this case it only gives me the option to keep nothing...
    Yes, running Setup from within Windows will upgrade (or in this case downgrade) the current system. You can't do a downgrade and keep your apps and files.

    See the tutorial link I have just given in post #7 for the correct way to install as dual boot. Although it's talking about dual booting with 7 or 8, AFAIK it should work with 10 too (though as I said, I haven't tried it myself).
      My ComputersSystem Spec

  •    18 Mar 2018 #9

    Having difficulty doing the dual boot install


    I've created unallocated space to install W10 into. I have a bootable DVD for the install.

    Click image for larger version. 

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    When I boot from the DVD, the installer tells me that it can't install Windows onto the partition, because the disk has an MBR partition table and needs a GPT disk. Whatever tha means? I don't know how to make a screenshot here.

    So I'm following the tutorial referenced above by Bree, and running setup from the sources folder in the mounted ISO file. However, the unallocated space does not show up.

    Click image for larger version. 

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    So what do I do now??
      My ComputerSystem Spec


  • Posts : 16,417
    windows 10 professional version 1607 build 14393.969 64 bit
       18 Mar 2018 #10

    Use the information in this link to post images of disk management:
    Disk Management - How to Post a Screenshot of Windows 10 Tutorials

    Download and install: Minitool partition Wizard: MiniTool Partition Wizard Free Edition - Free download and software reviews - CNET Download.com
    Post an image into the thread.
    If there is any problem posting images please use one drive or drop box or google share links.

    The minimum recommended space per Microsoft is 20 GB.
    So give yourself a little extra space.
    Windows will automatically delete memory dump files if the free space is < 25.
    So if you can give yourself some extra buffer it may better once you can get Windows installed.
    Windows 10 System Requirements Specifications | Microsoft
      My ComputerSystem Spec


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