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This is a dup thread for one that was started in 2020. Same stuff is still happening. I'm about 5 minutes from uninstalling Edge. If my PC reboots, Edge takes over PDFs. So annoying
Opening and reading PDF files in Microsoft Edge on Windows 10
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Please, do not waste your time trying to permanently set your default PDF app. IT WILL CHANGE BACK TO MICROSOFT IN SHORT ORDER. Just accept it and change it back each time you notice - you will save aggravation. Someone somewhere will tell you the definitive way to solve this, but it is a waste of time, and will not work.