how to change associated app in windows
1 Select  Associate a file type or protocol with a program 2  . Scroll through the list to find the extension you are looking to change and double-click it. 3  For my example, I want to change .TIFF files from Photoshop to the default Windows image viewer. 4  A new window appears giving you the recommended options.
1 Go to Default Programs (or again, skip step 1 and go Windows Key, then type Defau and the Default Program link appears.). 2  Select  Associate a file type or protocol with a program 3  . Scroll through the list to find the extension you are looking to change and double-click it.
Here are the steps: 1  Go to the Control Panel (or my favorite, hit your Windows Key and type Cont and the Control Panel link appears). 2  Go to Default Programs (or again, skip step 1 and go Windows Key, then type Defau and the Default Program link appears.). 3  Select  Associate a file type or protocol with a program .