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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10
votes
2answers
5k views

Can Notepad++ be made to open file links in itself?

In Settings/Preferences, Notepad++ has an option on the MISC. tab under 'Clickable Link Settings' to the right, to Enable to open links found in the edited files. It underlines them and opens them on ...
0
votes
2answers
26 views

Windows 10 - Unhook “tel://” association

When I click a link starting with tel: Windows automatically opens Skype. Does anyone know a way to force it to open the app selector dialog again? To be clear, I don't want to just associate a ...
0
votes
0answers
18 views

How to verify if applications can be moved by copy and paste?

I need to migrate some programs from an old laptop to a new machine. I neither have installers for those applications, nor I can download them online. The only way to move them from one machine to ...
11
votes
2answers
15k 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?
-1
votes
1answer
123 views

Getting Wordperfect 9 .wpd file associations to work under Windows 10

If I start a .wpd file Wordperfect 9 starts but does not load the file. An error pops up saying "An error occurred when sending commands to the program". The file itself opens ok from WP, it looks ...
3
votes
1answer
3k views

Manually Add Program to Open With in Windows 10

I have a standalone version of IrfanView (x64) and want it to appear in the Open With menu for all image files. I do not want it to be the default program however. For some reason no matter what I do, ...
0
votes
0answers
22 views

Execute multiple commands with file association

Is it possible to execute multiple commands from a file association only from windows registry ? (e.g. without a script) So far I have tried the following : HKEY_CLASSES_ROOT\exefile\shell\my ...
4
votes
1answer
1k views

How to stop Skype periodically asking default association for URL:Callto / URL:Skype protocol

Every now and then, perhaps weekly, I'm getting a pop-up from Skype after boot asking me to set associations for the program. If this is a Skype issue or a Windows (8.1) issue I'm not sure - but it is ...
9
votes
6answers
18k views

Windows 10 default programs keep changing

Since the fall update last month, Windows 10 automatically keeps changing the default apps for certain types (mostly browser,pdf,mp3,jpg). I have tried changing them back from the Settings app as well ...
1
vote
1answer
32 views

Windows- how do I create my own file extensions, and associate them with my own program?

I have developed a C# WPF application that will display .pdf files to the user. The user can load the PDF directly File --> Load --> (select PDF file) --> Open after selecting the PDF, and ...
0
votes
1answer
3k views

How do I add Sublime Text the Windows 8 “Default Programs” list?

I've tried using the following registry file to add Sublime Text 2 to the Default Programs list in Windows 8 Enterprise x64. It doesn't show up. All the paths are correct. This method has worked for ...
1
vote
0answers
35 views

On Windows 7, how do you change the Edit command to use Notepad for xml files, instead of Word? [duplicate]

Generally I prefer to use Notepad++ to edit xml files, but when right-clicking on one in Windows and just selecting Edit, I still prefer for it go to Notepad anyway, which is the usual on Windows ...
3
votes
0answers
18 views

Unable to Open Open Office spreadsheet on Windows 10

It used to work fine a few months ago. So it must be one of the Win 10 updates. When I click on the .ods file, Open Office flashes up and then closes. If I start Open Office from its shortcut on ...
0
votes
1answer
17 views

In Windows 8, where to manage shell context menu commands associated with file types?

Maybe this is a duplicate, but I cannot guess the correct teminology to find answer if it was posted already. Where in Windows 8 can I open the user inteface to add/edit/remove shell context menu ...
1
vote
3answers
8k views

Stop Google Chrome opening Office files using Google Documents

How can I configure Google Chrome to stop trying to open PowerPoint and other document files using Google Documents? I work behind a firewall, and Google Documents cannot access the files anyway. ...
3
votes
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 ...
0
votes
0answers
24 views

Set Windows 10 default .pdf association for LoginVSI Users

I am attempting to change the default program for opening PDFs in a Horizon View pool to do some LoginVSI testing. I am trying to change the default to Adobe Reader 11 that shipped with LoginVSI 4.1....
0
votes
1answer
29 views

How to associate file extension in Windows 10 to arbitrary command?

I would like to set FXML files opened with Gluon Scene Builder, which exists in the form of JAR file. So, in old good Windows I would associate these files with command like javaw -jar ...
-1
votes
1answer
19 views

Adding or registering a file type so it can be associated with an application

I need to associate a specific application for a .mus file type on a Windows 10 PC. NONE OF THE ANSWERS INVOLVING THE "OPEN WITH" OR OTHER CONFIGURATION EDITORS WORK. This is because the .mus file ...
1
vote
3answers
4k views

Windows Explorer 'Can't open this item"

Even since installing DWIM Perl on a Windows 7 x64 machine, whenever I install certain programs, attempting to open most MS programs included with Windows gives me: Can't open this item It might have ...
1
vote
1answer
55 views

Windows 10 “send to” and default file association configuration - all users

I am a developer, and I've just created an application, and my own file type, with an unique extension (let's say it would be .aaa). What I want to do is to add an entry on the "Send to" menu (right-...
5
votes
9answers
20k views

Registering a program to show in the “Open With” list

After installing LibreOffice and then unistalling OpenOffice, all the files for the many office document types (odt, ods, doc, xls, rtf and a dozen more) are unassociated with any application. When I ...
0
votes
0answers
20 views

Windows default program for a variable file type? [duplicate]

Our email filtering system will filter out emails containing M$ word docs and similar files, search them to make sure they are 'safe', then reattach them to the email but with the extension changed. ...
0
votes
1answer
33 views

Manually set file type association with non-installed program via registry?

I seem to have an issue where I can no longer associate XML files with the editor I use, which is a portable version of EmEditor. It doesn't matter what I do, when I try to associate it using the "...
3
votes
1answer
73 views

What could be causing assoc to say “the system cannot find the file specified”?

I am running assoc from an administrative command prompt I'd like to add an entry for .vbsc in my list of associations. It won't let me, Though it will let me do one for .vbsd And it is running ...
0
votes
1answer
79 views

Set default programs keeps reverting

For a month or so now the default programs keeps reverting. And I have to manually re-set my desired applications for certain file types, however these keep reverting irregular (sometimes after a day ...
0
votes
1answer
53 views

Cannot set a Windows 10 Store App as default program to open a file

Usually, right clicking on a file, selecting "Open with" followed by "Choose another app..." brings up the following menu which also includes installed apps, so that one may be set as the default ...
1
vote
0answers
24 views

Cannot open anything - No file associations?

A friend's Windows 8.1 pc cannot open any files, not even .exe, .lnk, etc. I suspect malware, but it's not something I've seen before and none of the standard tricks worked. Symptoms Regular Boot ...
1
vote
1answer
29 views

ftype changes are ignored. Where does Windows retrieve the “incorrect” value from? How can I enforce my changes?

assoc and ftype, provide a mapping between extension and a program to launch for that extension. And for some reason, despite what I have specified by assoc and ftype, some other application is ...
0
votes
1answer
76 views

How do I restore .bat association on Windows 8? [duplicate]

I have accidentally set the association for .bat files to notepad. This was done by going to the Default Programs panel and setting it to run with notepad. I've tried everything I can find on this ...
2
votes
2answers
1k 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, ...
103
votes
1answer
58k 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?
0
votes
4answers
3k views

Getting .py scripts to open up in Python's IDLE

I'm new to Python. I use Python 2.7 and I am running Windows Vista (64-bit). How do I make it when I click on .py scripts... that it opens up in IDLE so I can edit it a snap? Ya know... without having ...
0
votes
0answers
12 views

Is it possible to associate an extension one way for Windows Explorer and another way for the command line?

I have several "executable file types", like FinalBuilder scripts with an extension .fbp8. I want the following scenario: If I type the name test on the command prompt, the script will be executed ...
4
votes
3answers
3k views

How do you want to open this file?

Windows 10 has a dialog that asks How do you want to open this file? Here's a screenshot I found on the web: I think it does this for every file type once. Since I have a lot of types that ...
45
votes
10answers
65k views

How do I restore .bat files association with the system (make them run when double-clicked)?

What do I set the 'Opens with...' property to in order to get the system to run .bat files again (when they are double-clicked)? Somehow my boss convinced his workstation that the handler for .bat ...
58
votes
5answers
93k 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 ...
24
votes
2answers
14k 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 ...
1
vote
2answers
42 views

cannot chose any application in “Open With” for Windows 10

I usually use NotePad++ as my default text editor. I am using Windows 10, and for example I like to set .config files to open using NotePad++. Usually, in other version of windows you would click on ...
1
vote
2answers
154 views

Change default app launched when editing vector smart objects in Photoshop

I installed the CC suite trial apps, however I haven't yet started the trials and prefer to continue with CS6 for the time being. However the installation changed the default editor for all my files ...
0
votes
1answer
62 views

How do I make PDF files to be opened as a Google Chrome application?

I want to use Google Chrome browser as my default PDF reader so I've associated .pdf file extension with the Google Chrome. But I'd also like Chrome to open it as an application window. I know I can ...
18
votes
3answers
10k views

Windows 8 is losing options in the “Open with” menu after changing file associations

When I set a program to open a specific file type by default, it works (like Word 2013 for PDF files). However, when I change the default back to reader, I lose Word as an option that I can pick in ...
3
votes
3answers
2k views

Windows 8.1: Restore .bat file association to default

A few weeks ago I accidentally changed .bat files to open with Notepad++ (a fairly common issue I believe). On Win XP and Win 7 I had a .reg file that updated the relevant registry keys and sorted out ...
0
votes
0answers
14 views

How to remove file-assosiations to Qt Creator in KDE

How to remove file-associations to Qt Creator 5 in KDE? It is assigned to very many files format by default (txt, doc, xml, js, sql, and many many others). Trying manually remove some associations ...
15
votes
1answer
18k 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. ...
2
votes
4answers
5k views

Run .sh file on double click on Windows with Cygwin

I created a .sh script file on my Windows machine. I'd like to run it on double click. If I open up the Cygwin Terminal and start it manually with the “sh” command it runs without problems. When I ...
0
votes
0answers
128 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 ...
4
votes
2answers
4k views

How to revert an accidental file association

When I right-clicked into an .exe file then chose Open with... and I select choose a program then I selected the wrong program. I checked the checkBox that has the label Always use the selected ...
0
votes
1answer
218 views

Mac OS X 10.10 Yosemite Changing File Associations not working

On the Mac I've got OS X 10.10 Yosemite and when I right-click and open-with a different program (and have to manually allow programs that aren't suggested) OS X immediately ignores me and keeps ...
-1
votes
1answer
5k views

How do I change APPLICATION associations in Windows 10?

Windows 10 installation broke some of my system associations. When I run some of broken apps, they often show a message, that they are not default anymore, proposing to make them default again. ...