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.

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4
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1answer
932 views

Chrome: how to open with system viewer by default?

Google Chrome used to open PDFs downloaded to the hard drive using the system's default PDF viewer by default. Recent versions of Chrome use Chrome's (inferior) built-in PDF viewer by default even ...
3
votes
1answer
271 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 ...
2
votes
1answer
87 views

Change exe file association for single user

it is relatively easy to set the file association for exe files in windows (a nice way to lock yourself out, btw). This is typically done in the HKEY_CLASSES_ROOT, which is valid for all users. But is ...
2
votes
1answer
499 views

Batch change filetype associations on OS X

I just installed Sublime Text 3 beta and would like to re-associate all the filetypes I have linked to ST 2 with ST 3. Is there any way to perform this as a batch operation? For example: $ ...
2
votes
1answer
861 views

Firefox is changing file extensions on downloads

Today I downloaded a .reg file, and Firefox made it a .reg.txt file. I downloaded a .zip file and Firefox made it a .zip.htm file. Both files worked fine when I fixed the extensions. What happened ...
2
votes
1answer
182 views

How can Standard User change file associations in Windows 2000?

One of my clients is still running Win2K server with a host of Win2K workstations. And no net admin, due to the downturn of the economy over the years. I'm sort of helping out. Out of my depth, but I ...
1
vote
1answer
552 views

Microsoft Edge keeps taking over PDF file open/association

Every few days the file association for PDFs on my Windows 10 machine switches to Microsoft Edge. I then right click on a PDF, choose "Open With -> Choose Another App", select Acrobat from the list, ...
1
vote
1answer
620 views

Unable to set default program for 1 file type

I've exhausted everything I can think of to fix this. Basically my indesign documents lost their file extension association. No other file extensions seem to be affected. Interestingly they do still ...
1
vote
1answer
41 views

Make a custom picture extension behave like an existing one on Windows 7 x64

OK, so I understand that this may be achievable by combining a number of answers from other questions, but the exact recipe has been eluding me and I wonder if there isn't an actual 'correct' way of ...
1
vote
1answer
319 views

How can I set a default program that isn't in in program files?

I downloaded a copy of ImageJ off the net. When I extract the package to Program Files the default file association is accepted by Windows. When I exact the package into my desktop (which solves ...
1
vote
1answer
567 views

Mac OS X: file associations keep changing (though reverting it manually)

For some time now I'm experiencing an annoying behavior under Mountain Lion: While doing my daily work, the programs to open a file keep changing. For example, opening a PDF is switched to Adobe ...
1
vote
1answer
3k views

How to associate the mailto protocol with a custom exe?

In Windows 8, How do you set the default program for the mailto protocol to a custom exe? Under Default Programs, the only option I get is to select from a list of programs (Mail or Google Chrome) or ...
1
vote
1answer
122 views

Internet Explorer: How to continuously (on the fly) pick which program to use when opening files?

Issue: I want to be able to open one file extension with multiple different programs depending on my choosing. Specifically in Internet Explorer. On Firefox and Opera this is standard, they offer a ...
1
vote
1answer
597 views

How to add a command line switch to a Windows 7 file assocation?

I want to add some command line switches when calling a program via File association in Windows 7. This used to be possible in Windows XP, but I can't see how to do it in Windows 7.
0
votes
1answer
33 views

System owns this folder

Occasionally I get messages telling me I can't access, modify or delete specific files and folders, even when I am an admin. For example the windows.old folder because system owns it. I am on Windows ...
0
votes
1answer
235 views

How do I stop using OneDrive as my default “Documents” location on Windows 10

I'm on Windows 10 and today I had to look for a file which I knew was in "Documents". However, when I browsed to the directory C:\Users\MyUser\Documents I didn't find the folder, the folder was in my ...
4
votes
0answers
1k views

How to associate visual studio 2012 with SQL files in Windows 8?

I'm using Windows 8 and I'm trying to make Visual Studio 2012 the default program with which to open my .sql files. I have right-clicked on a .sql file and chosen: Open with... > Choose default ...
3
votes
0answers
78 views

Windows 10 file association, does not hold from search menu

I am facing a weird problem, I am using foobar (latest as of now, 1.3.8) to play mp3's in Windows 10, foobar is set as the default app for music, as is the '.mp3' extension, when I open an mp3 file ...
2
votes
0answers
322 views

Associate and view XML files - Visual Studio

Visual Studio can be used as an XML editor. For example, I can go to File>New>XML File. I can also create an XML file as part of a project and view it via the project manager. Proof you can use it ...
2
votes
0answers
197 views

Want Mathematica (instead of CDF Player) to launch by default when accessing .nb files over the Web

I have both Mathematica and CDF Player installed on my machine. I'm trying to access a Mathematica notebook over the Web and want Mathematica to launch when clicking on the link. Instead, the file ...
2
votes
0answers
619 views

Office Document Icons still messed up after reassociation

My MS Office 2010 documents show up like this in Explorer: They open fine, but I'd like to get the icon corrected. I have run a repair from Add/Remove programs. I have cleared the icon cache ...
2
votes
0answers
170 views

Associate FTP links with FileZilla in Win8 (or any specific exe with a protocol)

Like Associate FTP hyperlink to filezilla, I want to associate FTP links with FileZilla, only I'm on Windows 8. When I open an FTP link or try to set the associated app for FTP links, I don't get an ...
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0answers
75 views

Windows 10 November update (10586) resets associations

Windows 10 November update resets associations to MS defaults, for instance .m3u is re-associated to Groove (which is unable to play that since it contains internet streams). How to automatically ...
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0answers
44 views

OS X Finder: “Plain Text Document” has changed to “text”, “Rich Text Document” to “rich text (RTF)”, etc

Sometime recently some file type names have changed — not the file associations or default application, but the name of the file type itself. "Plain Text Document" has changed to "text", "Rich Text ...
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0answers
59 views

Default Program and Icon for Specific File Name In Windows

Is it possible to set the default program and icon for files of a specific name? Particularly, I'm interested in setting the default program and icon for file names that typically come with open ...
1
vote
0answers
27 views

Multiple entries for Google Chrome in Open With

On my computer (Windows 8.1), both the Desktop "Open with" submenu and the corresponding WinRT dialog contain multiple entries for Google Chrome, when invoked for an HTML file. So far as I'm aware, ...
1
vote
0answers
391 views

Double-clicking a universal data link (.udl) file doesn’t open Data Link Properties dialog box

Ok folks, I'm pulling my hairs out on this one so hoped the wisdom of the crowd can help me out here and keep me sane... I have a new workstation with 64-bit Windows 7 on it and I can't use ...
1
vote
0answers
441 views

How to make Firefox open JAR files with the registered default program

When downloading a *.jar file, Firefox doesn't ask me if I want to open or download the file. It only offers the option to download it. Is there any way to configure Firefox to ask, like for most ...
1
vote
0answers
104 views

How to reset the look of .htm file icon?

My htm/html files saved on the desktop in Windows 8 looked like this: Now when I upgraded to Windows 8.1 they look like this: How can I return their previous look? PS. I went as far as tried to ...
1
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0answers
30 views

Associantion of a jpg by command line fails

I'm trying to associate files by command line. I could associate .rar file by this command assoc .rar=rarfile ftype rarfile=%USERPROFILE%\Dropbox\bin\WinRAR\UnRAR.exe x -ad "%1" But it fails with ...
1
vote
0answers
14 views

Change default image editor in only one folder

I've recently made the switch from traditional to digital art, and I have two folders: one where I edit images in photoshop and another where I keep a gallery of "finished" art. My question is, is ...
1
vote
0answers
446 views

No Ruby icon on '.rb' files after Ruby installation with RailsInstaller on Win XP. How to associate?

At first time I installed Ruby using RubyInstaller for Windows. And in the process of installation there was a checkbox whether I want to have .rb files to be Ruby files. If I agree all the .rb files ...
1
vote
0answers
674 views

Unable to change file association on Mac OS X Mountain Lion?

I'm trying to change a file association for an entire extension for an application called Eagle CAD. Currently, the .brd and .sch files are associated with apps called pcbnew and eeschema ...
1
vote
0answers
142 views

OS X thinks that my folder (with .suffix at the end) is related to some App

I've named a folder with .suffix which already bound to one of Mac applications. And that is the problem when I'm trying to open this folder through the Finder. I've delete the App related to ...
1
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0answers
304 views

Changing mkv to video kind on mac

I am trying to put mkv files under Video Category when arranging by kind on a mac. Here's what I added to info.plist of the Core Services <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE ...
1
vote
0answers
585 views

Removing File type association from Windows 8

I have created a metro style app similar to Windows Photo Viewer using C#. The app is also displayed in the OpenWith context menu of image files. But, due to some reasons the app is not working. So, I ...
1
vote
0answers
33 views

How to change all associations in kde

Gimp associated instead of Okular and gwienview to all mine graphical files and pdfs. There are so many options to change in file associations. Is there a way to do it quicker and better? In gnome I ...
1
vote
0answers
3k views

How to configure MIME type associations for Safari 5.1?

I want to edit the MIME type settings for Safari so I could use MediaWiki's method to automatically edit text in an external editor, or more specifically, so I can change the associated application ...
0
votes
0answers
22 views

Default Mail app cannot be changed to Outlook 2016 OSX 10.11

The default mail app in OSX is 'Mail' and even though in the mail preferences the default is set to use Outlook, it still opens Mail to open a .eml file. I've tried this on 3 different computers and ...
0
votes
0answers
89 views

Windows 10 - uncheck by default “always use this app” when selecting a browser

I'd like windows to always ask me which browser I want to open a link in. For that after installing Firefox and did not select it as default browser and now every time an application tries open a web ...
0
votes
0answers
53 views

Reset standard file association for js files

Normally .js files are executed using some script host executable and they have a specific icon and also have a special context menu entry "Open with Command Prompt"". Now some program or maybe it ...
0
votes
0answers
20 views

File associations for different users

In our environment, we have an admin windows account and a standard user login account. Our standard accounts have access to Office 365 ProPlus which is installed locally (click to run version), but ...
0
votes
0answers
217 views

how to Portable Apps permanent file type association?

I have windows 7 64bit. I have many portable apps in my D Drive. PROBLEM: I was able to before, now I cannot associate my files (txt,docx,...any extension) to PortableApps[dot]com portable apps such ...
0
votes
0answers
63 views

ProcMon - strange error when running from a batch file

I have a batch file which uses ProcMon to monitor another task and runs in a loop. Every 20 minutes I terminate procom and restart it with a new datetime-named backing file. This is to keep the log ...
0
votes
0answers
200 views

Windows won't accept new default program

I am trying to set MarkdownPad2 as my default program for opening .md files on my Windows 7 PC. I installed MarkdownPad2 via Chocolatey. If I open MarkdownPad2 and then use the File -> Open menu I can ...
0
votes
0answers
743 views

Fix .lnk file association WITHOUT admin/registry access

I managed to recreate the problems detailed here and here. I tried to use Notepad to open a .lnk file. Now all shorcuts appear as .lnk files, and open in Notepad. This isn't an uncommon problem and ...
0
votes
0answers
783 views

“Windows can't open this file” when downloading torrent with Chrome

Previously when I was clicking on a "get this torrent" button in Chrome, it would just download the .torrent file. That is the expected behaviour. Someday, probably surfing too late and too tired, I ...
0
votes
0answers
254 views

Can't un-associate .css extension from Visual Stdio 2013

In - Control Panel\Programs\Default Programs\Set Associations under .css file , it has Microsoft Visual Stdio 2013 as Currect Defualt - I try to change its current default under the Change ...
0
votes
0answers
286 views

Change file type associations in autohotkey script

I have a Surface Pro 2 running Windows 8.1. I use Zotero for all my academic reading, and depending on whether I'm using the surface as a laptop or as a tablet, I'd like the program used to edit PDFs ...
0
votes
0answers
457 views

How to associate a file extension with a Windows command (not path)?

In Windows 7, I want to associate .tex files with latex, which is in PATH. The association should work even if the binary is moved to another place in PATH. Can that be accomplished without ...