upgrade windows 10 32bit to 64bit

Discussion in 'Windows Guest OS Discussion' started by thomas pingel, Aug 7, 2020.

  1. thomas pingel

    thomas pingel Bit Poster

    I have a windows 10 32bit pvm in parallels Version 15.1.4 (47270).
    Can I upgrade this pvm to 64bit? If so, where can I find the procedure?
    Thanks in advance.
  2. RogerH6

    RogerH6 Kilo Poster

    You just need to install a new 64bit VM.
    Windows 10 doesn't offer any ability to upgrade from 32 bit to 64 bit. The only way to do it is to re-install. The same W10 license, should be accepted by the new install. Make sure you have license numbers and installs available for all the software you use before starting.
  3. AndyB9

    AndyB9 Bit Poster

    At what stage of the Windows 10 installation process in Parallels does it let you select 64 bit? I am currently running a 32 bit Win 10 VM and would like to upgrade to 64 bit. I tried starting the process of reinstalling Win 10 within Parallels and it started to download 5.27GB without letting me select whether I wanted the 32 bit or 64 bit version.
  4. Ajith1

    Ajith1 Parallels Support

    If you use the Parallels Installation Assistant, then the downloading version is 64 bit. If you wish to make sure you are installing 64 bit, then follow the steps below
    1. Download Windows 10 ISO - https://www.microsoft.com/en-in/software-download/windows10
    2. Start the virtual machine creation as mentioned in https://kb.parallels.com/4729 but when you are on the screen to select the ISO and continue to select "Locate Manually" then select "Continue without a source" then proceed to select Operating System.
    3. Choose the profile for your virtual machine.
    4. Give a name for the virtual machine and create. You will get a no boot screen.
    5. Use Actions (on Mac menu bar) > Stop.
    6. Now you can see the empty VM on Parallels Desktop Control Center.
    7. Now you can mount( https://kb.parallels.com/8638 ) the Windows 10 ISO and start the virtual machine which will start Windows installation manually.
    8. Don't enter Windows key during installation select "I don't have a key". You can complete the activation after the installation is complete.
    9. Install Parallels Tools (see http://kb.parallels.com/115835 for assistance).

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