Forum Discussion

AustinRomero's avatar
AustinRomero
Iron Contributor
Sep 01, 2026

Windows keeps resetting my default apps after every update

Every time Windows does a monthly update, it resets my default apps—browser, PDF reader, video player, all of them. I've set them back to what I want at least a dozen times by now, but the next updat...
Features
licensing
Ryan_C1's avatar
Ryan_C1
Brass Contributor
Sep 01, 2026

Monthly Windows updates should normally preserve your default apps. If several defaults are reset together, Windows is probably repairing a missing app registration, applying a policy, or undoing changes made by a debloat or cleanup tool.

Start by setting each application completely:

  1. Open Settings > Apps > Default apps.
  2. Search for your preferred browser, PDF reader or media player.
  3. Select the app and choose Set default, if that button is shown.
  4. Check the remaining file types and protocols, such as .pdf, .mp4, HTTP and HTTPS, and assign any that were missed.

Since you removed some preinstalled apps, avoid running the removal tool again. Removing protected components or app registrations can cause Windows servicing to repair them during an update, which may also rebuild the default-app associations.

Also check Settings > Accounts > Access work or school. A company or school policy can reapply its own defaults. If this is a personal PC, remove only accounts you no longer use or recognize.

Then repair the Windows components. Open Terminal as administrator and run:

DISM /Online /Cleanup-Image /RestoreHealth sfc /scannow

On Windows 11 Pro or Enterprise, you can enforce your current choices without editing the registry:

  1. Set all default apps correctly.
  2. Open Terminal as administrator and run:
    Dism /Online /Export-DefaultAppAssociations:"C:\DefaultApps.xml"
  3. Press Win + R, enter gpedit.msc, and press Enter.
  4. Go to Computer Configuration > Administrative Templates > Windows Components > File Explorer.
  5. Enable Set a default associations configuration file and enter C:\DefaultApps.xml.
  6. Restart Windows.

This policy reapplies the saved associations at sign-in, but the selected applications must remain installed. Windows 11 Home does not include this Group Policy option. If the problem continues there, test a new Windows user account; defaults that remain correct in the new account point to damage in the original user profile.