In an operating system, the means of assigning a file extension or mime type to a particular application, as a default means of opening this type of file.

learn more… | top users | synonyms (1)

8
votes
6answers
4k views

Associate a File Type with a Specific Program

How do you associate a specific file type to an application on a Windows (Vista) PC?
13
votes
2answers
5k views

How do you associate the .exe file extension with a program in Windows?

A few years ago I saw somebody play a prank on somebody by associating the .exe file extension with Internet Explorer. This made Internet Explorer open up every time the person wanted to start a ...
3
votes
1answer
10k views

How to repair a broken .EXE file association

After (hopefully) scrubbing viruses out of a Windows 7 installation (after deciding not to simply run over the laptop repeatedly with my car), I've got everything almost back to normal. The only ...
31
votes
4answers
27k views

How do I set advanced file associations in Windows 7?

It used to be in Windows XP that I could make Warcraft III files load automatically into the game by double clicking on them. This association was made by going to file associations ADVANCED area and ...
38
votes
7answers
97k views

How to restore Windows default Zip file functionality?

I recently lost the default file association for Zip files in Windows Vista (I think it happened when I uninstalled WinAce, but I can't be completely sure). How can I restore this association back to ...
22
votes
5answers
7k views

What program do you use to edit file associations in Vista and Windows 7?

We all know that Vista and Windows 7 doesn't let you specify custom extensions or customize them to your liking. What program do you use to edit file associations in Vista and Windows 7? EDIT: ...
12
votes
2answers
12k views

Programatically associate file extensions with application on Windows

I've just recently reinstalled Windows and in setting up my environment I've noticed that all my associations for the various programming languages I edit in Notepad++ have gone (naturally). I am ...
3
votes
5answers
15k views

How do I add new applications to the “Set Default Programs” list in Windows Vista/7?

In the Set your default programs window, you have the ability to allow an application to open all the file types it knows how to handle by default. I have installed several programs, but almost none ...
5
votes
1answer
8k views

How do I fix broken .exe file association in Windows Vista?

Somehow the file association for all .exe files has been deleted on my windows vista machine. For some reason the only thing I can open is Firefox. I think it was the result of a virus. So I have ...
7
votes
1answer
11k views

How to change default app for all files of particular file type through terminal in OS X?

How can I change the default app for all files of a particular file type through the Terminal in OS X?
12
votes
5answers
16k views

Why are certain default application associations “locked”?

After associating my MP3 files with MPlayer using the Open with/Choose default program... dialogue I can no longer change that association using said dialogue, the Always use this [...] Checkbox is ...
5
votes
2answers
5k views

How to create a default association for files with no extension [duplicate]

Possible Duplicate: How to set the default program for opening files without an extension in Windows? I am using http://www.pnotepad.org/ (i wouldnt mind switching to something else if it ...
7
votes
5answers
3k views

Portable file association for USB sticks?

I have a usb stick with PortableApps that I carry around between different places. But one thing that annoys me, is when I open a file (such as *.flv or *.html), either Windows says it is unsupported ...
4
votes
1answer
25k views

Accidentally caused all .exe programs to open in Notepad [duplicate]

Possible Duplicate: How do you associate the .exe file extension with a program in Windows? I wanted to look at a shortcut or .exe file (not sure which, unfortunately) in Notepad, so I ...
2
votes
1answer
435 views

How to set the default program or application for handling a given file type or url protocol?

How can I change or set the default application for handling a given file type? What about for some specified actions, like "open web browser" and "preview image"?
1
vote
3answers
1k views

How do I make a batch file the default application for a file type

I am trying to associate .svg files with a batch file that runs squiggle from batik. When I right click on an svg and select Open With and Choose Default Program, I get the usual window, which lists ...
0
votes
1answer
1k views

How to fix .exe file association in Windows? [duplicate]

I recently downloaded an ASP.NET project, which was a self-extracting zip file. I right-clicked the file and chose Open With → Microsoft Visual Studio. Now apparently it unzipped and set the default ...
9
votes
5answers
5k views

Change all file type associations from one program to another

Is it possible to easily change all file type associations that are currently associated with one program to another program in one batch? In my case, I am trying to change all files types currently ...
4
votes
2answers
16k views

Adding Eudora to Windows 7 “Default Application” list

I'm trying to get Eudora to work smoothly under Windows 7. I know it is obsolete, but I have specialized filters and Perl scripts that are not portable to other email clients. When Eudora starts in ...
92
votes
1answer
42k views

How do I get Notepad++ to associate a file type with a language? [duplicate]

I have associated .wxs files with Notepad++. So far so good. However, it doesn't remember that it should use XML syntax highlighting. How do I associate a file-type with a Language?
33
votes
7answers
47k views

How do I restore .bat files as executables?

Somehow my boss convinced his workstation that the handler for .bat files was supposed to be Word. Now, when double-clicking .bat files, they're opened up in Word. What do I set the 'Opens with...' ...
27
votes
4answers
25k views

Change Windows 7 explorer “Edit” context menu action for jpg and other image file types

When I right click on a jpg file in Windows Explorer (Windows 7), I see that there is an "Edit" menu item. If I click this item, it opens the image in MSPaint. Blah. I have Paint.NET installed, and ...
15
votes
8answers
54k views

Why can't change the default program to open an extension in Windows 7?

I mistakenly assign Office Outlook to open my .eml files in Windows 7. But, as Outlook do not open such files, I downloaded Live Mail, but now I can not assign it to open this kind of file by default. ...
12
votes
2answers
19k views

Delete Windows file association using .reg file

Question: Using a .reg file, how do I completely remove a file type association? I tried e.g. deleting HKEY_CLASSES_ROOT\myextension_auto_file but that's apparently not enough. Background: On Windows ...
8
votes
1answer
6k views

OSX: assign extension to content kind

Here I have a folder containing a bunch of *.mkv files (video, obviously) and *.srt files (subtitles, obviously). I want to keep them within one folder but I don’t want them to be mixed together. It ...
3
votes
1answer
1k views

Associate icon with file of specific type

This Super User Question described several methods how associate some specific program with file type. Now I want to know if there is a method to set a specific icon to files with a specific ...
2
votes
6answers
8k views

How do you associate an action with a file type in Firefox 3.0?

I'm trying to associate a specific action with a file type in Firefox 3.0. When I go to Edit > Preferences > Applications, there is no way to add a file type, such as MP3. I can edit existing file ...
1
vote
1answer
1k views

Set default open-with app to a Python program on a Mac

I use the open source application UliPad to edit restructured text files (rst). It is a Python application that I launch via Terminal like so: python32 UliPad.py I have python32 as an alias to the ...
7
votes
1answer
25k views

Where is the Default Program associations stored in the registry? [duplicate]

If I run the assoc command-line utility for an extension, it shows the file type/description for the extension I set in the registry. But if I go to Control Panel -> Default Programs - Set ...
4
votes
3answers
892 views

.cmd runs from cmd.exe but not from start menu / Run dialog

problem If I run a .cmd file from cmd.exe it works fine. However if I run it from Start menu / Run line, it opens in Notepad++, my editor. (edit I've it installed for years, didn't update it ...
4
votes
1answer
2k views

How to change file associations on Mac OS X?

By default PNG images open in Preview. At some point, this has changed on my system so that clicking on a PNG file launches Paintbrush. While that's a really nice app, I'd still like the default to be ...
1
vote
1answer
18k views

How to delete a file association? [duplicate]

I'm having problem with Team Foundation Server (TFS) when viewing .cs files and need to delete the file association with .cs in Windows 7. At the moment I go to Control Panel -> Default Programs ...
9
votes
5answers
14k views

“Send to: Mail recipient” context menu not working

I have set the Mail app from Microsoft (WinRT) as the default application for mail in Default Programs. However, when I right-click on a file, and select Send to > Mail recipient I get a message box ...
0
votes
1answer
1k views

Set default browser to be Portable Chrome on Windows 7? [duplicate]

Possible Duplicate: How do I add new applications to the “Set Default Programs” list in Windows Vista/7? I've tried to use DefaultBrowser but it's XP only. How can this be done?
0
votes
2answers
3k views

Choose Default Program dialog does not show up after choosing Open with entry in context menu [duplicate]

For some time now when I click Open with from Windows Explorer's context menu I'm getting this error This file does not have a program associated with it to perform this action. Create an ...
13
votes
5answers
33k views

Where does Mac OS X store file association information?

I know there is a system preferences pane to manually modify the file associations in Mac OS X Leopard. However, I'm curious where does Leopard actually store these information? UPDATE: as I said, ...
22
votes
2answers
13k views

What format does Google Chrome Developer Tools save data as?

I am using Google chrome's developer tools to inspect the timeline of some requests. There is the option of storing them as a .HAR file, but I could not find anything that opens it. In a browser, it ...
14
votes
1answer
13k views

How do I change my default browser to an unlisted program in Windows 7?

I use multiple browsers regularly, so I've written a script that will open pages in whatever browser is already running (or Firefox if there is none). I want to set this script as my default browser. ...
15
votes
5answers
7k views

How do I get ftype & assoc to match Windows Explorer?

I changed the association to use upon launching a .py file, via Windows Explorer: Tools -> Folders -> File types. Then browse to .py. Change the association to Wordpad. Now when I type the name of ...
4
votes
3answers
4k views

Mac OSX change file association per file on the command line

I need to batch change the application associated with certain files via the command line. I'm not to change the file association for a certain file extension, I'm actually looking to target specific ...
40
votes
6answers
60k views

How do I set Notepad++ as the default editor?

I want set Notepad++ as the default editor. I tried to set it by right-clicking on a file, then Open With. But I did not see Notepad++ in the resulting list (even after clicking on Choose Other ...
4
votes
2answers
921 views

WinRAR Context menu and file type detection of Windows

So far I know Windows display context menu based on the file extension rather than the file type. I just tested with empty text file with mp3 extension with winamp and the result is below: The same ...
3
votes
1answer
241 views

Start firefox using Another Profile, for specific file type(s)?

I have two profiles. A and B I have made shortcuts to start each profile as follows: "C:\Program Files\Mozilla Firefox\firefox.exe" -p A "C:\Program Files\Mozilla Firefox\firefox.exe" -p B Also, I ...
11
votes
3answers
4k views

How do I associate all unknown file types with notepad++?

I work alot with billing and files the bank etc. send me files that have date extensions or some counter as an extension: eg file1.20110315 or file2.123 So the extension changes every time I receive ...
10
votes
3answers
13k views

On OS X, how do you change a file's “Kind”?

On OS X I'd like to change the "Kind" label associated with files. Many of my files are showing up as "Plain Text File" when they are really javascript, php, css, and other file types. I don't have a ...
6
votes
2answers
2k views

How do I have no default web browser, so the system asks what browser to use when I click on a link?

I use Internet Explorer for some things and Chrome for others. I'd like to have a choice when I click on a link of which browser to open the link in. Is this possible in Windows? I am currently ...
6
votes
3answers
17k views

How to force a file association in Windows 7? (Regedit?)

I recently upgraded my Adobe CS4 Des. Standard to CS5. For some reason Adobe didn't overwrite CS4 but instead installed CS5 as a whole new series of programs. Seeing as I didn't want both CS4 & ...
5
votes
4answers
26k views

Why can't I associate files with Excel after upgrading to 2010?

With Excel 2007 I was able to use Open With to associate TSV files with Excel, so that I could double-click on them and they would automatically open with each value in a different cell. But since ...
4
votes
1answer
5k views

Change default text editor to Sublime Text in Linux Mint

I've installed Sublime Text 3 from the .deb found here: http://www.sublimetext.com/3 Now, how to set it as the default text editor in place of gedit in Mint 16?
4
votes
2answers
285 views

How change file association?

I need to change program that opens xml files on my Windows Vista. When I open "Open With" dialog and click "Browse" and locate my _.exe, nothing happens. The program is not added to the list. Vista ...