😡The app is not installed, and Google Play Protect is already disabled.

Issue

On some Samsung devices, the Agent app may show “App not installed” or fail to run, even if you have already disabled Google Play Protect.

Possible Causes

Samsung Device Security (McAfee)
- Samsung phones include their own “Device security” layer (powered by McAfee) in addition to Google Play Protect.
- This may automatically block installation of apps that request sensitive permissions (SMS, Call Log, Location, Microphone, etc.).
Package signature conflict
- If another app with the same package name (applicationId) was installed earlier with a different signing key, Android will refuse to install the new APK.
Incompatible CPU architecture (ABI)
- Some APK builds are only packaged for x86 or armeabi-v7a.
- Samsung Galaxy devices (e.g. Galaxy A30, A50, etc.) require arm64-v8a support.
Unknown sources not allowed.
- On Samsung, you must explicitly enable installation from the source app (e.g., Chrome, My Files, or a file manager).

Solutions

Go to Settings → Biometrics and security → Device security and temporarily disable McAfee/Device security before installing.
Make sure Install unknown apps is enabled for the installer you are using (Settings → Apps → Special access → Install unknown apps).
Uninstall any previous version of the app completely (choose Uninstall for all users).
Check that the APK is built for arm64-v8a (or as a universal APK).
If installation still fails, connect your device to a PC and run:
```
adb logcat | grep -i PackageManager
```
This will show the exact reason (signature mismatch, ABI not supported, insufficient storage, etc.).

Note Some newer Samsung devices (running One UI 6 and later) also include Auto Blocker, which prevents sideloading by default. This must also be turned off in Settings → Security and privacy → Auto Blocker.