APK not installing? Here's every fix

1. “Install unknown apps” is blocked

Android blocks installs from new sources by default. Enable it for your browser in Settings → Apps → Special access.

2. Corrupt or incomplete download

If the APK was cut off mid-download it won't parse. Re-download — IPALinked links support resume, so retrying works.

3. Signature conflict

“App not installed” often means a version signed with a different key is already installed. Uninstall the existing app first.

4. Downgrade attempt

Android refuses to install an older version over a newer one. Uninstall first.

5. Wrong CPU architecture

An arm64-only APK won't install on a 32-bit device. Ask the developer for a universal build.

6. Android version too old

The build's minSdkVersion exceeds the device's Android version.

7. Not enough storage

Clear space and retry.