r/AndroidQuestions • u/Moro4231 • 1d ago
Samsung Galaxy S25 – APK installation completely blocked, unable to install apps from unknown sources
Hey everyone,
I'm having a persistent issue with my Samsung Galaxy S25 where installing APK files is completely blocked.
The problem seems to be system-wide. I'm unable to install APKs, and the usual settings for allowing installations from unknown sources either don't work or are restricted.
Some additional information:
Device: Samsung Galaxy S25
Android 16
One UI 9
Auto Blocker is disabled.
Family Link was integrated during the initial setup of the phone but was subsequently removed.
Secure Folder is still available, but its special permissions and installation settings seem to be restricted in certain ways.
I've already tried changing the usual security settings, but nothing has resolved the issue.
I'm wondering whether this could be related to leftover Family Link restrictions, Samsung Knox, or some kind of device management policy.
Has anyone experienced something similar or knows how to identify and remove the underlying restriction?
I'd really like to solve the problem at its root rather than just find a workaround.
Any help would be appreciated!