What causes windows default apps reset after each update on Windows?

Common causes of windows default apps reset after each update include: Windows Update resetting app associations, Application re-registering itself as default on update, UserChoice hash mismatch in registry, Competing applications fighting for default status, Windows feature updates wiping custom associations, Group Policy enforcing default apps.

How do I know if I have windows default apps reset after each update issues?

Common symptoms of windows default apps reset after each update include: Default browser resets to Microsoft Edge after updates, PDF files open in Edge instead of Adobe Reader, Photo files reverting to Photos app instead of your chosen viewer, "An app default was reset" notification appearing, File associations changing without your input, Default apps reset after every Windows Update.

Fix Windows Default Apps Reset After Each Update

Symptoms

You might be experiencing this problem if you notice:

•Default browser resets to Microsoft Edge after updates
•PDF files open in Edge instead of Adobe Reader
•Photo files reverting to Photos app instead of your chosen viewer
•"An app default was reset" notification appearing
•File associations changing without your input
•Default apps reset after every Windows Update

Common Causes

⚠Windows Update resetting app associations
⚠Application re-registering itself as default on update
⚠UserChoice hash mismatch in registry
⚠Competing applications fighting for default status
⚠Windows feature updates wiping custom associations
⚠Group Policy enforcing default apps

Solutions

Solution 1: Set Default Apps Properly

1Go to Settings > Apps > Default apps
2Click the app you want as default (e.g., Chrome, Firefox)
3Click "Set default" for all supported file types
4Or search by file type: type ".pdf" and select your preferred PDF reader
5For browser: also check Settings > Apps > Default apps > Web browser
6Set each file type individually for best persistence

Solution 2: Prevent Reset After Updates

1Windows uses a hash to verify default app choices
2If the hash is invalid: Windows resets to its own apps
3After setting defaults: export the registry key as backup
4HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts
5After an update resets defaults: import the backup .reg file
6Some third-party tools like "SetUserFTA" can set defaults that persist better

Solution 3: Block Reset Notifications

1The "An app default was reset" notification means Windows changed something
2Re-set your preferred default immediately when you see this
3To prevent Edge from stealing associations:
4Open Edge settings > Default browser > "Let Internet Explorer open sites in Microsoft Edge": set to "Never"
5Uncheck "Make Microsoft Edge the default" prompts
6For persistent issues: use Group Policy (gpedit.msc) to set default associations

FIXES THIS IN 5 MINUTES