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Default File Associations - Restore in Windows 8

  1. #1
    Default File Associations - Restore in Windows 8

    Default File Associations - Restore in Windows 8
    How to Restore Default File Extension Type Associations in Windows 8 and 8.1
    Published by Brink is online now
    19 Aug 2012
    Default Default File Associations - Restore in Windows 8

    How to Restore Default File Extension Type Associations in Windows 8 and 8.1

    information   Information
    This tutorial will allow you to restore the default registry entries and program associations for the file extension type and protocol of your choice in Windows 8, Windows RT, Windows 8.1, and Windows RT 8.1.

    This can be helpful for example when a file extension type opens with the wrong program by default, has the wrong icon, or is missing or corrupted in the registry. Downloading the .reg file for the selected file extension below, will restore that file extension back to default for all of these items above.

    Default program associations for file extensions are a per user setting by default, so you will need to be logged on to the effected user account to be able to restore the default associations of the file extension for that specific user account.

    warning   Warning
    These default file associations should only be used in Windows 8 and 8.1.

    Note   Note
    The list of available default file extension and protocol associations below is just a start for now, and is a work in progress.

    I'll constantly be adding more to the list, but if one you need is not listed yet below, then please post a request for it. I'll be happy to get it added to the list.




    Here's How:

    1. Click/tap on the link of the file extension type or protocol in the table below that you would like to restore the default associations of to download it's .reg file.

    2. Save the .reg file to your desktop.

    3. Double click/tap on the downloaded .reg file to Merge it.

    4. If prompted, click/tap on Run, Yes (UAC), Yes, and OK to approve the merge.

    Tip   Tip

    • If you are signed in as a standard user account, then you will also get a Cannot import type error. Just click/tap OK for it. This is normal since what cannot be imported can only be done so by an administrator account instead. It will still restore the default associations of the file extension if the standard user used Open with to select the wrong program to open the file with.


    • If the .reg file is not able to Merge, then double check in Default Programs to make sure that the .reg file extension has it's Current Default program set as Registry Editor (C:\Windows\regedit.exe). Afterwards, try merging the .reg file again.




    5. Sign out and in, or restart the computer to apply.

    6. If you are logged in as a standard user and this still does not help, then have the administrator also merge the needed .reg file for the listed file extension or protocol below while logged into their administrator account.

    7. When finished, you can delete the downloaded .reg file if you like.




    Default Windows 8 and 8.1 File Associations:

    Note   Note
    To download all available default file extensions in the table below in one ZIP folder, click on the Download button below and save the ZIP file to your desktop. Open the ZIP file, and extract (drag and drop) to your desktop any .reg file for file extensions you want to use. You can now pick up at step 3 above.

    download




    File Type or Protocol Default Program Description
    .3gp Video app Audio and video container format developed by the 3rd Generation Partnership Project (3GPP); designed as a multimedia format for transmitting audio and video files between 3G cell phones and over the Internet; commonly used by mobile phones that support video capture.
    .avi Video app Audio Video Interleave (AVI) files
    .bat Windows batch file
    .bmp Photos app Bitmap image files
    .cab Cabinet file
    .cer Crypto Shell Extensions Security Certificate file
    .cmd Windows Command Script
    .contact Windows Contacts Contact file
    .cpl Windows Control Panel Control Panel item
    .crt Crypto Shell Extensions Security Certificate file
    .cur Cursor
    .dat Generic data file created by a specific application; typically accessed only by the application that created the file; may contain data in text or binary format; text-based DAT files can be viewed in a text editor.
    .dds DDS (DirectDraw Surface) image
    .der Crypto Shell Extensions Security Certificate file
    Directory Directory protocol associations
    .dll A Dynamic Link Library (dll) file is a support file used by one or more programs. Application extension.
    Drive Drives
    .exe Executable application files
    .ext EXT File. For example, email text attachment.
    Folder All folders except library folder
    .gif Photos app Graphics Interchange Format (GIF) image files
    .hlp Windows Winhlp32 Stub Help file
    .htm Internet Explorer HTML (Hypertext Mark-up Language) document files
    .html Internet Explorer HTML (Hypertext Mark-up Language) document files
    http Internet Explorer URL: HyperText Transfer Protocol
    https Internet Explorer URL: HyperText Transfer Protocol with Privacy
    .ico Windows Photo Viewer Icon file
    .img CD or DVD image file
    .inf Notepad Setup Information
    .iso Disk image file
    .jpe Photos app Compressed image format standardized by the Joint Photographic Experts Group (JPEG)
    .jpeg Photos app Compressed image format standardized by the Joint Photographic Experts Group (JPEG)
    .jpg Photos app Compressed image format standardized by the Joint Photographic Experts Group (JPEG)
    .jnt Windows Journal Windows Journal file
    .library-ms Library folder
    .lnk (LNK) Shortcuts
    mailto URL:mailto
    .mapimail Mail service
    .mp3 Music app MP3 sound format file
    .mp4 Video app MPEG-4 movie file
    .mpg Windows Media Player Movie clip
    .msi Windows installer Windows Installer Package
    .msu Windows Update Standalone installer Windows Update Standalone Package
    .nfo System Information System Information File
    Open with - > Choose default program This is for what opens when you right click on a file, click on Open with, and click on Choose default program.
    Package Package protocol
    .pdf Reader app Portable Document Format (PDF) File
    .png Photos app Portable Network Graphics (PNG) is a bitmap compression method for image files. PNG supports 16.7 million colors, it is lossless and also supports index color, grayscale, true color, transparency, and is streamable. It is thus the best compression method (better than GIF or JPEG) for use on the web.
    .scr Screen saver
    .theme Personalization CPL Windows Theme File
    .themepack Personalization CPL Windows Theme Pack File
    .ttf Windows Font Viewer TrueType font file
    .txt Notepad Text files
    Type To remove association with blank file extension.
    .url current default Internet Browser Internet website shortcut
    .vbs Microsoft Windows Based Script Host (wscript.exe) VBScript Script File
    .vhd Virtual Hard Disk image file
    .wab Windows Contacts Windows Address Book (WAB) file
    .wav Music app Wave audio file
    .website Internet Explorer Pinned Site Shortcut
    .wma Music app Windows Media Audio file
    .wmv Video app Windows Media Audio/Video file
    .workfolders Windows Control Panel Microsoft Workfolders
    .xaml Windows Presentation Foundation Host Windows Markup file
    .xml Internet Explorer XML Document
    .zip Compressed folders



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  2. #1


    United States
    Posts : 654
    Windows 8.1 Pro, iOS 7.1, Elementary OS


    Thank you, this saved me!
      My System SpecsSystem Spec

  3. #2



    Posts : 18,587
    64-bit Windows 8.1 Enterprise (RTM)


    You're most welcome Grant.
      My System SpecsSystem Spec

  4. #3


    Hi Shawn,

    Not to sound too picky but I noticed something in ISO reg file

    Code:
    [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.iso\OpenWithList]
    "a"="Windows7-USB-DVD-Download-Tool.exe"
    "MRUList"="a"
    Not sure if we need the last 2 lines. Or is it intentional? Sorry again I was just trying to understand how it works
      My System SpecsSystem Spec

  5. #4



    Posts : 18,587
    64-bit Windows 8.1 Enterprise (RTM)


    Hello Shyam,

    Always good to hear from you. Thank you for letting me know. I missed removing it. It's removed from the .reg file now.

    Luckily, that registry entry only listed the "Windows7-USB-DVD-Download-Tool" program first in the "Open with" dialog of ISO files to be available to select as a default program. The built-in ISO feature (Windows.IsoFile) in Windows would still be the default program instead though.
      My System SpecsSystem Spec




  6. #5


    Quote Originally Posted by Brink View Post
    Hello Shyam,

    Always good to hear from you. Thank you for letting me know. I missed removing it. It's removed from the .reg file now.

    Luckily, that registry entry only listed the "Windows7-USB-DVD-Download-Tool" program first in the "Open with" dialog of ISO files to be available to select as a default program. The built-in ISO feature (Windows.IsoFile) in Windows would still be the default program instead though.
    Thanks and thanks for the explanation.
      My System SpecsSystem Spec

  7. #6


    Posts : 108
    Windows 8 Pro 64bit


    Fantastic article this but one question I did want to ask is... if they have messed up the "exe" association I assume that means they wouldn't be able to run programs hence how do they download the fixes?... or is there another way around this?
      My System SpecsSystem Spec

  8. #7



    Posts : 18,587
    64-bit Windows 8.1 Enterprise (RTM)


    Hello milW0rm,

    Usually they will still be able to download and merge the .reg file to fix .exe file associations. Running .reg files would not be affected by not being able to run .exe files.

    If not, then they could download it on another computer, copy it to the desktop of the affected computer, then merge the .reg file.

    Hope this helps,
    Shawn
    Last edited by Brink; 02 Jan 2013 at 11:19 AM.
      My System SpecsSystem Spec

  9. #8


    Posts : 108
    Windows 8 Pro 64bit


    @Brink thanks I just wondered how they would run the web browser since it's a program to download the reg files.
      My System SpecsSystem Spec

  10. #9



    Posts : 18,587
    64-bit Windows 8.1 Enterprise (RTM)


    You're welcome. Anytime.
      My System SpecsSystem Spec

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