Windows 10: Restore Default File Type Associations in Windows 10  

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  1. Posts : 19,903
    64-bit Windows 10 Pro build 16179
    Thread Starter
       06 Nov 2016 #180

    Joker2133 said: View Post
    OK so here's what I did

    There is a file extension .b9bf20c8 that somehow got associated with notepad and I think I need it to be unassociated with any application.

    Every time my computer starts up, notepad opens the file and I cant did-associate it with notepad

    Hello @Joker2133, and welcome to Ten Forums.

    The .reg file below will unassociate .b9bf20c8 files for you.

    Unassociate_b9bf20c8.reg
      My ComputersSystem Spec

  2.    06 Nov 2016 #181

    Thank you, that worked!!
      My ComputerSystem Spec


  3. Posts : 19,903
    64-bit Windows 10 Pro build 16179
    Thread Starter
       06 Nov 2016 #182

    You're most welcome.
      My ComputersSystem Spec


  4. Posts : 1
    Windows 10, Server 2012
       06 Dec 2016 #183

    Thanks for posting this tutorial.
    The EXE reg file saved us on a 2012 R2 Terminal server where the EXE extension had become associated with a particular program and nothing would run! This happened via a Group Policy Preference setting gone awry.

    Tried it because the server was useless and we were looking at a restore from backup.
    We ran 'change user /install' before merging the reg file and 'change user /execute' after... not sure if that was necessary but it worked!
      My ComputerSystem Spec


  5. Posts : 19,903
    64-bit Windows 10 Pro build 16179
    Thread Starter
       06 Dec 2016 #184

    I'm glad it was able to help bitginsu, and welcome to Ten Forums.
      My ComputersSystem Spec

  6.    08 Dec 2016 #185

    Hello Brink. Thanks for this tutorial!

    I have different problem about this "Default Apps" settings related to Office 365 x64 which is installed in my Windows 10 Pro x64.

    Actually, everything is worked perfectly, except these things: File Thumbnails and File Associations in File Explorer.

    I can't set the default apps for this following extensions:

    .doc
    .ppt
    .xls

    And many more.

    I've noticed that I can't set my default apps only for Office 97-2003 file extensions. Eventhough I've tried to set it via Control Panel, it just won't let me set Office 2016 application to open those files. I also have tried to set the default apps via "Open With" and search the appropriate program to open those files. It's not working either. The errors I've got is this:

    1. When I tried to set it via Control Panel, it won't save my settings. (The thumbnails are inappropriate of course)
    2. When I tried to set it via "Open With", my settings is saved but the thumbnails are inappropriate. So, I check it via Control Panel and File Explorer. The result? My settings are not saved either.

    The other file extensions (such as .docx, .pptx, .xlsx) are worked fine without any problem with the correct thumbnail in File Explorer.

    Is there any solution for this?

    Thanks in advance.
      My ComputerSystem Spec


  7. Posts : 19,903
    64-bit Windows 10 Pro build 16179
    Thread Starter
       08 Dec 2016 #186

    Hello Bima,

    Are you able to set the programs to be default with all associations in Default Programs with Option Six below?

    https://www.tenforums.com/tutorials/5...a.html#option6
      My ComputersSystem Spec

  8.    08 Dec 2016 #187

    Brink said: View Post
    Hello Bima,

    Are you able to set the programs to be default with all associations in Default Programs with Option Six below?

    https://www.tenforums.com/tutorials/5...a.html#option6
    Hello Brink,

    It didn't work either. Confusing right?
      My ComputerSystem Spec


  9. Posts : 19,903
    64-bit Windows 10 Pro build 16179
    Thread Starter
       08 Dec 2016 #188

    It is indeed. What do they show as their default program using Option 7?

    https://www.tenforums.com/tutorials/5...a.html#option6

    If these are files created from a much older version of Office, they may no longer be compatible with Office 2016, and could be the reason they won't open in it.
      My ComputersSystem Spec

  10.    08 Dec 2016 #189

    Brink said: View Post
    It is indeed. What do they show as their default program using Option 7?

    https://www.tenforums.com/tutorials/5...a.html#option6

    If these are files created from a much older version of Office, they may no longer be compatible with Office 2016, and could be the reason they won't open in it.
    There are no programs related to Office 2016 in the options, so I have to locate the executable files for Word, Excel, or Powerpoint to set it. But, my settings won't saved.

    So, I tried to open my files from the program itself (e.g. I open my .doc file from Word 2016), and it opened normally. Same result for .xls and .ppt files.

    Any solution to this?
      My ComputerSystem Spec


 
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