How do you want to open this file? / Keep using this app or An app default was reset In most cases use of the ASSOC command will result in, the first time opening a file with that extension will prompt the user:
#Batch file extension windows
Starting with Windows 8, Microsoft introduced “tamper protection” into the registry to prevent any unauthorized changes to file associations (changes not made via the Windows API). Per user file associations are stored in the registry under HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts associate all no-extension files with notepad: The command ASSOC followed by just a file extension will display the current File Type for that extension.Īn association can be set for files with no file extension using. JPG files back to the original executable program. Removing the association to "txtfile" does not restore the association to "jpegfile", but if you restore the association to "jpegfile" with ASSOC that will automatically restore the link for. JPG so it is associated with the File Type "txtfile" then it's normal association with "jpegfile" willĭisappear. Here is a list of Common File Extensions and FileTypes. So the path is: File Extension > File Type > executable JPEG can be associated with the File Type "jpegfile"Īt any one time a given file extension can only be associated with one File Type. More than one file extension can be associated with the same File Type.Į.g. File extensions are not case sensitive and are not limited to 3 characters. The File extension is used by Windows to determine the type of information stored in the file and therefore which application(s) will be able to display So a file called JANUARY.HTML has the file extension.
Display or change the association between a file extension and a fileType SyntaxĪ file extension is the last few characters in a FileName after the period.
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