Change Back To Unknown Application Type

I was looking at the content of some .com-playback file types using the "open with" command and then selecting VLC player. Unfortunately I accidentally had the box ticked to open all files of this type with VLC from now on. The files were originally designated as being opened with an "unknown...

I accidentally set TMP file from location (C:\Users\Personal\AppData\Local\Google\Chrome\User Data\Default\Pepper Data\Shockwave Flash) "open with" to vlc player The files were originally designated as being opened with an "unknown application". I can set these files to be opened by default...

Hello so i have accidently changed that all .lua files open with notepad on default since i forgot to uncheck always use the selected program to open this kind of file. So is there any way to restore all .lua files back to normal that they open with unknown application so i have to select what to...

I was looking at the content of some .ui file types using the "open with" command and then selecting Notepad. Unfortunately I accidentally had the box ticked to open all files of this type with Notepad from now on. The files were originally designated as being opened with an "unknown...

hi...how do i change avi.001 to unknown application..it really annoy me to see it with other program..someone do help me...tq:)