Windows 8 and 8.1 Forums


"Windows Presentation Foundation Host" opens with Chrome

  1. #1


    Montana
    Posts : 6
    Windows 8 64 bit

    "Windows Presentation Foundation Host" opens with Chrome


    I accidentally set "Windows Presentation Foundation Host" to default open in Google Chrome, I don't know why I did. I was experimenting, I guess. I don't know how to fix it.

    Windows Presentation Foundation Host is an XAML file. I don't know a whole lot about how computers and their files work, but I know a little like how to navigate with task manager, file explorer, control panel, etc.

    Any help will be appreciated, thank you for your time and efforts.
    Last edited by Brink; 17 Nov 2013 at 15:28. Reason: removed email address

      My System SpecsSystem Spec

  2. #2


    Posts : 22,581
    64-bit Windows 10


    Hello Sean, and welcome to Eight Forums.

    Not sure how you did that, but you should be able to do a system restore using a restore point (if available) dated before you did to undo and fix this.

    Hope this helps,
    Shawn
      My System SpecsSystem Spec

  3. #3


    Montana
    Posts : 6
    Windows 8 64 bit

    The backstory


    So I downloaded a Windows 8 app called "Sequencer", an app that lets you create and edit tracks using instruments and such, and you are able to save and load using key + z. Occasionally, it would crash and I would lose all of my data for the app, saved tracks and stuff. So I uninstalled. This happened several times more, as I would download it later out of boredom of my current apps. I opened task manager one day, went to sequencer, opened file location. I copied and pasted all of the files from the app into a backup folder I made, to try and experiment to see if replacing all of the files in the app after it crashes will bring my saved tracks back (DON'T worry, aside the point, I haven't tried replacing them yet). In the file location, I was trying to view the SaveSequencePage, apparently a windows markup file (which I don't know what is, I might Google it). it said Open with... so I clicked "Windows Presentation Foundation Host". It said "How would you like to open this file?" So then I clicked Google Chrome, and the check-box for "Use this for all 'whatever (forgot the abbreviation)' files". It only did the second part once, so now I don't know how to fix it.
    HERE's where I need help.
    Click image for larger version
    Thanks in advance!

    ps. I don't know how setting the default program to open Windows Presentation Foundation Host will affect my computer, so far nothing bad has occurred (that I know of)
      My System SpecsSystem Spec

  4. #4


    Montana
    Posts : 6
    Windows 8 64 bit


    Click image for larger versionSo the file I was trying to open is an XAML file, I didn't see that in the above list... But really, I think I am trying to restore the default program of "Windows Presentation Foundation Host". Remember, I selected that to open with Google Chrome, it wasn't a the factory default.

    Click image for larger version
    So here's what happens after you click Open with > Windows Presentation Foundation Host. It opens in Google Chrome, and asks me if I want to save the same file again.
      My System SpecsSystem Spec

  5. #5


    Posts : 22,581
    64-bit Windows 10


    Ah, ok. I see what you mean now.

    I've added .xaml to the table in the tutorial below to hopefully help with this.

    Default File Associations - Restore in Windows 8
      My System SpecsSystem Spec

  6. #6


    Montana
    Posts : 6
    Windows 8 64 bit


    Ok, thanks! Will do now... (I'm on mobile now, glad there's an app!)
      My System SpecsSystem Spec

  7. #7


    Posts : 22,581
    64-bit Windows 10


    You're most welcome. I'm glad it could help.
      My System SpecsSystem Spec

"Windows Presentation Foundation Host" opens with Chrome
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