Setting Default Programs for opening files in Windows 10

Sometimes a Windows or software update may change its defaults, so you may find your emails try to open in a different mail app, or PDF's now open in Chrome or Microsoft Edge rather than Adobe Reader. There are two main methods for changing the default programs used, which can resolve this issue.

To get to either, click the 'Windows' button  in the bottom-left corner of the screen, and select the cog icon  , on the left-hand side. Then select 'Apps', then 'Default Apps'.  

Method 1: Setting a program to have all its defaults

1. From the 'Default Apps' page, scroll to the bottom of the page and select 'Set defaults by app'.
2. Select the App from the left-hand side and select 'Set this program as default' (the below screenshot is an example of setting Adobe Reader to have all it's defaults, including .PDF files). 
3. Click 'Ok', then click the 'X' in the top-right corner to close the 'Default Apps' page.

Method 2: Setting a program to open a particular file type

1. From the 'Default Apps' page, scroll to the bottom and select 'Choose default applications by file type'.
2. This will bring up a list of all the known file-types your computer is aware of, and will also show which program is assigned as the default for that file type.
3. Scroll down the the file type you would like to change the default to, then click on the program box next to that file type (or 'Choose a default' if no program has been assigned). The below example shows the .PDF file type, which currently has Adobe Reader as the default.
4. Once finished, click the 'X' in the top-right corner of the screen, to close the window.