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  1.    17 Apr 2016 #21
    Join Date : Jan 2016
    Posts : 19
    Windows 7 Professional/Windows 10 Home

    I have a 'digital entitlement' for a Windows 10 upgrade from Windows 8.1.

    As an experiment a few months back I installed Windows 10 as a dual boot on the same hard drive (the same copy with the same digital entitlement). After the second install both copies said they were activated.

    Within a short time both copies were no longer valid, i.e. the activation was revoked for both of them. Said something about the key being blacklisted if I recall correctly.

    From memory, I had to reinstall Windows 8.1 then upgrade it to 10, make sure it was activated (which I'm guessing gave me a new digital entitlement) then wipe it out and do a clean Windows 10 install since I prefer clean installs to upgrades.

    So, if you install the same copy of 10 (with the same product key or digital entitlement) as a dual boot, you'll end up with the activation revoked for both of them.
      My ComputerSystem Spec
  2.    17 Apr 2016 #22
    Join Date : Apr 2016
    Posts : 9
    windows 7 windows 10
    Thread Starter

    Quote Originally Posted by CarlSD View Post
    I have a 'digital entitlement' for a Windows 10 upgrade from Windows 8.1.

    As an experiment a few months back I installed Windows 10 as a dual boot on the same hard drive (the same copy with the same digital entitlement). After the second install both copies said they were activated.

    Within a short time both copies were no longer valid, i.e. the activation was revoked for both of them. Said something about the key being blacklisted if I recall correctly.

    From memory, I had to reinstall Windows 8.1 then upgrade it to 10, make sure it was activated (which I'm guessing gave me a new digital entitlement) then wipe it out and do a clean Windows 10 install since I prefer clean installs to upgrades.

    So, if you install the same copy of 10 (with the same product key or digital entitlement) as a dual boot, you'll end up with the activation revoked for both of them.
    Cheers, this is the information I have been looking for
      My ComputerSystem Spec
  3.    17 Apr 2016 #23
    Join Date : Dec 2013
    Portsmouth Hampshire
    Posts : 1,868
    Windows 10 x86 14383 Insider Pro and Core 10240

    At variance withCarlSD

    Microsoft does not appear to be enforcing their EULA definition of "device" as "partition" yet.

    It does not mean that they cannot or will not do so.

    In practice, it seems that multiple installations of Windows 10 on different volumes on a single PC which has "digital entitlement" will be accepted as valid and will activate automatically, and remain activated. This may be associated with Insider Membership.

    Digital entitlement copies of Windows 10 have generic, edition specific product keys, which are well known and published on the internet - they are not blacklisted.
    I would guess that this helps Windows 10 statistically, in terms of installed units.

    However, as such, their transfer to other machines remains problematic, or nil, depending on your POV.

    Once the one-year honeymoon period for Windows 10 is over, expect things to get tougher.

    Revocation of Windows 10 activation is not noticeably common for Tenforum Members who are running multiple instances of Windows 10.

    If activation is lost, it usually is reinstated on reinstallation.
      My ComputersSystem Spec
  4.    17 Apr 2016 #24
    Join Date : Jan 2016
    Posts : 19
    Windows 7 Professional/Windows 10 Home

    Thanks, Fafhrd, that's interesting.

    I only tried my experiment once. And, it was with the original W10 release (before the November Threshold 2 update) so I don't know if anything changed after the update. I can't imagine why it would change but stranger things have happened with Windows over the years.
      My ComputerSystem Spec
  5.    17 Apr 2016 #25
    Join Date : Apr 2016
    Posts : 9
    windows 7 windows 10
    Thread Starter

    Quote Originally Posted by CarlSD View Post
    Thanks, Fafhrd, that's interesting.

    I only tried my experiment once. And, it was with the original W10 release (before the November Threshold 2 update) so I don't know if anything changed after the update. I can't imagine why it would change but stranger things have happened with Windows over the years.
    I'm more inclined to go with you Carlsd. Microsoft must have some way to stop you installing the OS multiple times on a machine which has "digital entitlement"
      My ComputerSystem Spec
  6.    18 Apr 2016 #26
    Join Date : Oct 2013
    Newport, South Wales, UK
    Posts : 1,896
    Windows 10 Pro x64 FCU - XP/Vista/Win7/Win8.1 in VM for testing

    I am leaning to the side of two copies would be activated and then at least one, possibly two would be rejected. The issue of Insider builds is a non issue as they are a special case and would report this Back to any Microsoft licensing bot. Not sure what the case is exactly with the new system of digital entitlement but it was normal, with previous operating systems, for the licensing bot to only run every 90 Days and to need two fails to trigger a "block" of the Key. This would give a grace period between 91and 180 days before any action was taken so could well explain the "Some Time Later" reports of problems with entitlements.

    Just my opinion, of course, but it does have a logical basis
      My ComputerSystem Spec
  7.    18 Apr 2016 #27
    Join Date : Jan 2014
    Oak Ridge TN, USA
    Posts : 24,523
    Windows 10 Pro x64

    Interesting analysis. I think that might just be correct but I only need to run one copy of 10 at a time and right now I use the insider build as my primary OS. What I really think the OP should do is set up separate accounts for the two different uses of the computer. That way he only needs one copy of 10 and there would be no issues with it staying activated.

    I don't see any reason to run more than one copy of an OS on the same computer. And I mean two copies of 10.
      My ComputerSystem Spec
  8.    18 Apr 2016 #28
    Join Date : Dec 2013
    Portsmouth Hampshire
    Posts : 1,868
    Windows 10 x86 14383 Insider Pro and Core 10240

    Currently, builds 10240, and 10586 are RTM versions and 14291 (or have I lost track?) is also generally available. The latest insider PC build is 14316. They all have bugs and inconsistencies and idiosyncratic problems.

    As an Insider, there are very good reasons to check if behaviour on particular hardware is different as the builds evolve. The same process may be used between editions and x86 and x64 versions.

    To be able to compare two or more builds on identical hardware, devices and peripherals may be analysed for changes in driver compatibility, and also software behaviour.

    Perhaps a third party app may be updated only to find it will not run on earlier or later builds - a developer will naturally want to support all available Windows 10 systems in use, and test bugs reported in each variation.

    The same MS account or local account may be used on several comparative builds. The rationale for running local account (i.e. not as Insider) systems is that not all users are Insiders, and not all users want to run MS accounts. They still deserve support, whatever their preferences.

    If Microsoft were to prevent Insider versions at least from running multiple instances, it may stifle development some small software houses with limited resources.

    Currently, Digital Entitlement allows multiple copies of Windows 10 to run on the same device. As I noted earlier, this may be subject to change.
      My ComputersSystem Spec
  9.    18 Apr 2016 #29
    Join Date : Mar 2015
    Philadelphia
    Posts : 1,174
    Windows 10 Pro x64

    There's absolutely no reason to dual-boot the same OS on one computer. What you want to accomplish can be done easily with user accounts.
      My ComputerSystem Spec
  10.    18 Apr 2016 #30
    Join Date : Mar 2015
    New Mexico
    Posts : 1,336
    Windows 10 Pro,

    I have been dual booting a Windows 10 retail version and a Windows 10 preview version on the same machine with one license for weeks and everything seems honky dory.
      My ComputerSystem Spec

 
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