Android
Reset App Preferences auf Android
Android tracks several settings per app outside the app itself: whether it is disabled, whether its notifications are muted, which app handles a default action like opening links or photos, whether background data is restricted, and any permissions you previously denied. These flags live in the system, not inside the app's own data.
Over time this causes confusing behavior. An app you disabled stays hidden from the drawer even after you change your mind. A link keeps opening in an old browser you already replaced. Notifications stop showing up because you muted them months ago and forgot about it.
The Reset app preferences option clears all of these system-level flags for every installed app in one step: Tap on Settings ➕ Tap on System ➕ Tap on Reset options ➕ Tap on Reset app preferences ➕ Tap on Reset apps.
After the reset, disabled apps turn active again, muted notifications come back, default apps are cleared so Android asks you to pick again, background data restrictions are lifted, and denied permissions return to their original prompt state.
No app data, files, accounts, or in-app settings get deleted. If only one app is misbehaving, open that app's own App info page instead and adjust it there, so working apps keep their current defaults and permissions.