Since you are using Android 8.1, you need to permit installation from sources other than the Play Store.
This article is an archival record for users searching for historical software. For current Android versions, use official Magisk or APatch. kingroot android 81 0 apk download 2021
: Rogue sites package remote access trojans (RATs) into fake KingRoot APKs to steal banking details, passwords, and personal data. Since you are using Android 8
KingRoot relies on system vulnerabilities (exploits) found in older Android versions, specifically Android 4.4 (KitKat) through Android 6.0 (Marshmallow). Google introduced advanced security patches, Verified Boot, and stricter SELinux policies in Android 7.0 and 8.0. These upgrades completely blocked the exploits used by one-click rooting apps. Any website claiming to offer a "2021 updated version" of KingRoot that works on Android 8.1.0 is misleading. Risks of Downloading KingRoot APKs from Third-Party Sites : Rogue sites package remote access trojans (RATs)
If you still want to root your Android 8.1.0 device, you must abandon one-click APKs and use the modern, community-accepted method: .