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If used without parameters, ftype displays the file types that have open command strings =PerlScript ftype PerlScript= %1 %*. FTYPE FTYPE fileType FTYPE fileType= Key fileType: The type of file If you have multiple applications that use the same file extension, the ASSOC command. In computing, ftype is a command-line utility on Microsoft Windows which lists all Registry keys Registry. assoc; ftype; reg · regini · regsvr User environment. date · mode · path · set · setx · time · title · ver · whoami. File contents. comp · edit · edlin · fc · find.

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HKCR is very useful for querying the system, but not so good for finding out why it’s misbehaving. While changing program associations may be easier using the Windows Explorer Tools-Folder Options dialog no typing requiredthe command line method can also be useful, especially in batch files.

The “Open” action is defined by a string that includes the fully qualified path to the executable file that is to carry out the action and any parameters that must be passed to the executable. I am doing this for testing, so I can eventually choose my default version of Python easily.

HKCR is definitely merging the two locations in some fashion.

ftype | Microsoft Docs

As the file isn’t an executable file, the command line assumes that you want to open the asslc with the default application, as if you had double clicked it.

What i do to change the default program for a given extension in a programatic way vs the standard and more simple way using explorer is modify this registry key HKCU: Citrix provides automatic translation to increase access to support content; however, automatically-translated fftype may can ftpye errors.


Citrix is not responsible for inconsistencies, errors, or damage incurred as a result of the use of automatically-translated articles. Sign up using Email and Password. I suppose this is what is ttype up in ftype Python. Gauthier 1 8 So you need to run the command multiple times if you want an ftyoe to open multiple file types. If you install Paint. Take some time and browse the abovementioned keys with RegEdit to see more examples.

To delete the file type association for the file name extension. Microsoft have changed how this works from Windows 8 onward. The features and applications of Assoc and Ftype are discussed. Sign up or log in Sign up using Google. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Super User works best with JavaScript enabled. Note the use of quotation marks to enclose a path with spaces in it. To me and as i see to you as well the ftype and assoc command are useless.

Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. I did restart the prompt. NET, for example, and then right-click ftypf. Opened the Access Management Console, selected the server, and ran Update file types from registry.

I use the program subinacl, that you could download from here azsoc I changed the association to use upon launching a. The way Microsoft expect you to change this now is with an xml file which is implemented through Group Policy. I did a little testing on my Windows 7 system with procmon. Run the following command: Obviously you need the appropriate access rights to the registry keys.


Explorer the Windows shell always gives preference to the application specified in the vendor key which is specified under the extension’s default value.

This example is dtype illustration only. Article Configuration 2 found this helpful Created: Depending on how you call a file will depend on what verb is used. Also note that it is possible to create your own file extensions and to associate them with aszoc filetype. If I understand correctly, the key. HKCR does not work the way you think it does.

Windows command line: assoc and ftype

What I do not understand is fttpe what cases the fftype in Python. I got access denied when I tried assoc. But it does not seem to get used. Steps taken to detect the problem: Double clicking on the file will open the file with this application. However I recall reading in the past that associates made from within Explorer always overwrite those from Classes registry key. This is necessary because the full command for the open action requires the name of the file that is to be opened.

In the simplest form there is a registry key for a file extension e. These entries are not for just Windows Explorer as has been suggested but are an assooc source of user account file association overrides.