Go to the Start Menu in the bottom-left corner of Windows:
![Start icon Start icon](https://cdnsm5-ss11.sharpschool.com/UserFiles/Servers/Server_8717213/Image/Our%20District/Technology/Tech%20Tutorials/Troubleshooting/Default%20PDF%20app/Start%20menu.jpg)
When you click to open the Start Menu, type the word "default" and it will start searching:
![search for default search for default](https://cdnsm5-ss11.sharpschool.com/UserFiles/Servers/Server_8717213/Image/Our%20District/Technology/Tech%20Tutorials/Troubleshooting/Default%20PDF%20app/Search.jpg)
Select "Default apps" at the top of the search results:
![Default apps Default apps](https://cdnsm5-ss11.sharpschool.com/UserFiles/Servers/Server_8717213/Image/Our%20District/Technology/Tech%20Tutorials/Troubleshooting/Default%20PDF%20app/Default%20apps.jpg)
If you scroll to the bottom of the Default Apps settings, you will see the option to "Set defaults by app":
![set defaults by app set defaults by app](https://cdnsm5-ss11.sharpschool.com/UserFiles/Servers/Server_8717213/Image/Our%20District/Technology/Tech%20Tutorials/Troubleshooting/Default%20PDF%20app/Defaults%20by%20app.jpg)
Near the top you will see "Adobe Acrobat Reader DC" and when you click it you will be able to select "Manage":
![Defaults by app Defaults by app](https://cdnsm5-ss11.sharpschool.com/UserFiles/Servers/Server_8717213/Image/Our%20District/Technology/Tech%20Tutorials/Troubleshooting/Default%20PDF%20app/Acrobat%20Reader.jpg)
Click the app next to "PDF":
![File type associations File type associations](https://cdnsm5-ss11.sharpschool.com/UserFiles/Servers/Server_8717213/Image/Our%20District/Technology/Tech%20Tutorials/Troubleshooting/Default%20PDF%20app/PDF.jpg)
In the menu that appears, select "Adobe Acrobat Reader DC":
![Choose an app Choose an app](https://cdnsm5-ss11.sharpschool.com/UserFiles/Servers/Server_8717213/Image/Our%20District/Technology/Tech%20Tutorials/Troubleshooting/Default%20PDF%20app/Select%20an%20app.jpg)
If your previous default was Microsoft Edge it will ask to confirm that you want to change the app and you can click "Switch Anyway":
![Before you switch Before you switch](https://cdnsm5-ss11.sharpschool.com/UserFiles/Servers/Server_8717213/Image/Our%20District/Technology/Tech%20Tutorials/Troubleshooting/Default%20PDF%20app/Before%20you%20switch.jpg)