PDF files may open in a web browser instead of a dedicated application or fail to open entirely. Some LPA PDF documents may also crash or turn gray when opened in Microsoft Edge due to Edge's security checks.
How to fix:
Open Settings on your computer
Go to Apps → Default apps
Locate and select Adobe Acrobat Reader
Find the .pdf file type and assign it to Adobe Acrobat Reader (This will ensure all PDF files open in Acrobat instead of a browser.)
General Tips for Troubleshooting File Handling Issues
Always check and reset default applications for file types in Windows Settings.
Use compatible applications for specific file types to avoid crashes or errors.
Keep your software and applications updated to the latest versions to minimize compatibility issues. Using Adobe Acrobat Reader also avoids issues like PDF documents crashing or turning gray in Microsoft Edge.