Hi Paul! My name is David. I am a user of Microsoft products like you, and it is a pleasure to greet you.
It seems that this issue might be related to the way Windows 11 handles default app settings, particularly after updates. Sometimes, updates can reset default app settings, causing them to revert to Microsoft Edge for PDF viewing.
I'll share some steps with you:
- Reinstall Adobe Acrobat. In some cases, the application may not register correctly, which could be causing the problem.
- Open Settings > Apps > Default Apps
- Select the Adobe Acrobat application. You'll see the file extensions it can read. Change the .pdf extension, which is currently set to open with Microsoft Edge, to Adobe Acrobat.
An additional step you can try if the change doesn't work from the applications section is by right-clicking on any .pdf file > open with > choose another app, select Adobe Acrobat, and make sure to check the box "Always use this app to open .pdf files".
It's also important to determine if this behavior only occurs with Adobe Acrobat or if you're unable to set other applications as default. For example, do you experience the same issue with compressed files like .rar or .zip?
Do you have any additional version of Adobe Acrobat, for example, the Pro version installed alongside?
Have you checked if this issue occurs with another Windows user account?
If the settings still revert to Microsoft Edge after following these steps, it might be due to specific policies set on your computer, especially if it’s part of a corporate network. In such cases, it may be helpful to check with your IT department to ensure there are no overriding group policies affecting this setting.
Let me know if the shared information has been helpful. Regards.