Windows 7 File Association Fix, 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 in the tutorial below, will restore that file extension back to default for all of these items above.
A default program is the program that Windows uses when you open a particular type of file, such as a music file, an image, or a webpage. For example, if you have more than one web browser installed on your computer, you can choose one of them to be the default browser.
Default program associations for file extensions are 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.
If you are logged in as a standard user and this still does not help, then have the administrator also merge the needed .reg for the file extension below while logged into their administrator account.
- Download the Windows 7 File Association Fix
- Extrack and run
- If prompted, click on Run, Yes (UAC), yes, and OK
- restart the computer to apply.
Since there are so many default file extension types in Windows 7, most common windows 7 file extension:
- ani - Windows animated cursor file.
- aspx - ASP.NET Source file.
- asf - Advanced Streaming Format (ASF) streaming multimedia files containing text, graphics, sound, video, and animation. The default program is Windows Media Player.
- asx - Advanced Stream Redirector (.asx) The default program is Windows Media Player.
- AudioCD - Audio CD protocol associations.
- avi - Audio Video Interleave files. The default program is Windows Media Player.
- bas - BASIC source code file.
- bak - Usually used to rename a file extension with to make it a backup copy. bak as no associations by default.
- bat - Batch files
- bmp - Bitmap image files. The default program is Windows Photo Viewer.
- Briefcase - New Briefcase file.
- cab - Cabinet files.
- chm - Microsoft compiled HTML help files.
- cmd - Windows command script files.
- com - MS-DOS application files.
- cpp - Program source code written in the C++ programming language
- css - Cascading Style Sheet Document file. The default program is Notepad.
- cur - Windows File Cursor animation.
- dat - Generic data file created by a specific application.
- db - Data base file.
- dic - The .DIC file extension is a Dictionary file (text file).
- Directory - Directory protocol associations
- dll - A Dynamic Link Library (dll) file is a support file used by one or more programs.
- drive - Drive protocol associations.
- dvr-ms - Microsoft Recorded TV Show file. The default program is Windows Media Center.
- exe - Executable application files.
- folder - Folder protocol associations.
- gif - GIF (Graphics Interchange Format) image files. The default program is Internet Explorer.
- gz - Usually associated with Gzip. By default, there is no associated program for this in Windows 7.
- hlp - Help file
- hta - HTML (Hypertext Mark-up Language) application. The default program is Microsoft (R) HTML Application host (mshta.exe)
- htm - HTML (Hypertext Mark-up Language) document files. The default program is Internet Explorer.
- html - HTML (Hypertext Mark-up Language) document files. The default program is Internet Explorer.
- ico - Icon files. The default program is Windows Photo Viewer.
- img - CD or DVD image file, essentially equivalent to an ISO file.
- inf - Setup information files. The default program is Notepad.
- ini - The INI file type is primarily associated with 'Initialization/Configuration File'. These files are typically ASCII text with various configuration options set into sections.
- iso - Image file.
- jnt - Journal document file. Default program is Windows Journal.
- jpe - JPEG (Joint Photographic Experts Group) image files. The default program is Windows Photo Viewer.
- jpeg - JPEG (Joint Photographic Experts Group) image files. The default program is Windows Photo Viewer.
- jpg - JPG (Joint Photographic Group) image files. The default program is Windows Photo Viewer.
- js - Java Script files. The default program is Microsoft Windows Based Script Host
- lnk - Shortcut link (LNK) files.
- log - LOG is a file extension associated with Log files. It is a text file.
- m3u - MP3 Playlist File'. The default program is Windows Media Player.
- M4V - MPEG-4 file extension.
- mkv - A Matroska Multimedia Container file. By default Windows 7 does not have support for opening this file type and has no association.
- mov - Movie file. The default program is Windows Media Player.
- mp3 - MP3 sound format file. The default program is Windows Media Player.
- mp4 - MPEG-4 movie file. The default program is Windows Media Player.
- mpa - MPEG audio file. The default program is Windows Media Player.
- mpe - MPEG movie file. The default program is Windows Media Player.
- mpeg - MPEG (Moving Picture Experts Group) video file. The default program is Windows Media Player.
- mpg - MPEG video file. The default program is Windows Media Player.
- msc - Mirosoft Common Console document files.
- msi - Microsoft Windows Installer installation package file.
- msp - Microsoft Windows Installer Patch file.
- MTS - MadTracker 2 Sample File. High-definition MPEG Transport Stream video format, commonly called "AVCHD" (Advanced Video Codec High Definition); used by Sony, Panasonic, and other HD camcorders; based on the MPEG-2 transport stream and supports 720p and 1080i HD video formats. MTS files can typically be opened and edited using the software included with Sony and Panasonic HD camcorders. The default program in Windows 7 is Windows Media Player.
- otf - Open Type Font file. The default program is Windows Font Viewer.
- pbk - Dial-Up Phonebook file. The default program is Remote Access Phonebook.
- pdf - Portable Document Format (PDF) Windows 7 does not support reading this file type.
- png - Portable Network Graphics (PNG) is a bitmap compression method for image files.
- ps1 - Microsoft Windows PowerShell command line shell and scripting language file. The default program used to open with is Notepad.
- psd - The PSD file format, created by Adobe, contains graphics/photos created by image editing software such as Adobe Photoshop.
- reg - Registry file.
- rtf - Rich Text document files. The default program is WordPad.
- scr - Screen Saver files.
- tar - Tape Archive file. By default, there is no associated program for this in Windows 7.
- tif - Tagged Image files Format. The default program is Windows Photo Viewer.
- tiff - Tagged Image files Format. The default program is Windows Photo Viewer.
- tmp - Temp file. By default, this file extension does not have a program associated with it.
- ttf - True Type font file. The default program is Windows Font Viewer.
- TTS - A .tts file is a text file (an ini file) that corresponds to your book. The ToolBook Translation System (TTS) creates the .tts file for you when you set the book's TTS Identifier through the Setup Sources window.
- txt - Text document files. The default program is Notepad.
- url - Internet website shortcut link. The default program is Internet Explorer.
- vbs - Visual Basic Script files.
- wav - Wave audio file. The default program is Windows Media Player.
- wma - Windows Media Audio files. The default program is Windows Media Player.
- wmv - Windows Media Audio/Video file. The default program is Windows Media Player.
- wsf - Windows Script Files. The default program is Microsoft Windows Based Script Host
- xml - Excel Macro files. The default program is Internet Explorer.
- xps - XML Paper Specification document files. The default program is XPS Viewer
- xsl - A eXtensible Stylesheet Language file that defines the style of text, tables, and other objects within a XML document; similar to a .CSS file used by .HTML documents. The default program is Internet Explorer.
- zip - ZIP file extensions is a archival and data compression format used to compress one or more files to reduce the size of the file. The default program is Compressed Folders.
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