I tried to ‘Open with’ a file today, and accidentally left on the default ‘Always open this type of file with this program’. Since the message no longer appears, how do I unclick it?
(Not that it matters in this case; the sender compressed it wrong.)
Assuming you are using Windows XP (although it has been pretty much like this since Windows 95, I think, so it may well be the same in Vista too):
You can change the default opener program by right-clicking the file, selecting “Open with,” and then “Choose program”. After a bit of a wait (unless your machine is a lot faster than mine) you should get a long scrollable list of programs that you can select from, and an option (checkbox) to “Always open this type of file with this program”.
If you do not want any program at all to try to open it when you click it (but why would you want that? It is easy enough to open with a different program, usually just by dragging it into its window) I think teh easiest way is to go into any any folder, select Tools, then Folder options, then File Types. Wait a bit a gain for the list to come up, then scroll down to find the type of file you are concerned with(that can be an issue, the list is sort of alphabetized, but according to Microsoft’s own proprietary logic, and it is long and only appears in a tiny window) and then delete it from teh list. (This won’t delete the file, just the rule about what program to open it with.)
Otherwise, you would have to edit the registry, which is not something to be trifled with.
You might want to break a file association for reasons of security. Windows’ behaviour (that you can simply click on a file and the system will “do the right thing”) is both a major strength on a secure network and a major weakness on an open network. So you may want to manually decide how to open a file each time, lest you accidentally click on some malicious file that you have been tricked into downloading.
Or you may have multiple programs that can handle a particular file . Example:mumble.java can be opened by Notepad, WordPad, Word, Emacs, Eclipse… Depending on what you are trying to do, you may need to make a choice. I vaguely remember some kind of add-on which would give you a funky context menu called “Open with…” which would produce a context menu of programs which could handle this file type.
Open Explorer.
Choose the Tools|Folder Options menu.
Click the tab that says File Types.
Scroll through to find the file extension you are looking for.
You can now either delete it or choose the change button.
Every couple of years I decide that I’m going to finally figure out all these file association options and behaviors in Windows, and every couple of years I spend a day or two in total frustration. It would be really nice if we had more control over what we can do with the various file types but Windows makes it impossible to make sense out of it all.
What is even odder is that no one has come up with a decent file association manager (and yes, I know, there are some out there but they suck).
The options I have when I right-click, Shift+RC, or Crtl+RC are:
Open
Print
Save as
Remove
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Cut Copy
Paste --------------
Select all
I went into Control panel | Tools | File Type and found the wacky extension (called 7z, just FYI) and I deleted it. Going back to the original email with the file, I tried another right-click. No change to the options, as listed above.
I created a blank file with a test.7z filename and there was no “Open with” option shown in the context menu on my system (XP) either. Upon further experimentation, this appears to be the case with any extension that Windows doesn’t recognize at all (got the same result for test.bob, test.sam, etc.).