Windows Installer v5 problem. Avid Pro Tools unable to install

  1.    #1

    Windows Installer v5 problem. Avid Pro Tools unable to install

    I am trying to install the application "Avid Pro Tools Ultimate 2018.4 onto both of my laptop PC's running Windows 10. Both machines had a clean install of Windows 10 just a week ago and have very little software on them as of yet, in other words they are both identical and very recent/clean systems. One installs "Pro Tools" just fine, the other does not......
    On the first of the two PC's the install goes just fine and everything is installed correctly and Pro Tools works as expected. On second machine the install will not complete and behaves differently during the installation process. On this second machine when I run the installer it starts fine but then after 30 seconds it displays a "Windows Installer v5" window. This window did not appear during the installation on the first machine.
    This window pops up 3 times to which I have to click OK to so it will keep installing. Just before it appears the third time I get a new "Install Shield Wizard" window appear at the bottom of the screen that I think is the actual installation of the main Pro Tools app (the previous installation windows were installing the peripheral software I think).
    As soon as this Install Shield Wizard window pops up I get the third "Windows Installer v5" window and as soon as I click OK to that the Install Shield Wizard window disappears and the application stops installing.
    What could be going on that it won't let the main installer run, or rather quits it right after it starts? These machines are identical in terms of hardware and software. I have attached photos below of the process.

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      My ComputerSystem Spec

  2.    #2

    Does the user under which you are installing the program in both cases have the same rights?

    Could the messages relate to interaction with the site over the internet? What happens if you try disconnecting the internet during the installation?
      My ComputersSystem Spec


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