X Login Error Attestation Denied | Your Device Failed the Check

This error (LoginError.AttestationDenied) means the X (Twitter) app has performed a security check on your device using Google’s “Play Integrity API” and your device failed the check.

This is a new security measure enforced by X as of late 2024/2025 to block bots and modified apps. Here is how to fix it based on your situation:

1. The Immediate Workaround

If you need to access your account right now:

• Use the Browser: Open Chrome or Safari and log in at x.com. The browser version does not perform this check and will work immediately.

2. If you are a Standard User (No Root, No Mods)

If you are using a regular phone (Samsung, Pixel, etc.) and getting this error on the official app, your Play Store “certification” is likely glitched.

• Step 1: Clear Play Store Cache

  • Go to Settings > Apps > Google Play Store.

  • Tap Storage > Clear Data.

  • Do the same for Google Play Services.

  • Restart your phone and try logging into X again.

• Step 2: Update Everything

  • Open the Play Store and ensure the X app is fully updated.

  • Check if your phone has a pending System Update (Android Settings > System > Software Update).

Also Read : Why is Direct Express Not Working 

3. If you are using a “Modded” App (ReVanced, Aero, etc.)

This is the most likely cause. X is actively blocking third-party modified clients (like ReVanced or older versions with ad-blockers).

• The Status: Most modded versions are currently broken because they cannot pass the new “Attestation” check.

• The Fix: You must uninstall the modded version and install the official X app from the Google Play Store.

• Note: The old “Reset Password” trick that used to bypass this on modded apps has largely been patched as of recent updates.

4. If you are Rooted or using a Custom ROM (GrapheneOS, Lineage)

X now requires valid Play Integrity (formerly SafetyNet) to log in.

• Check your Integrity: Download an app like “YASNAC” or “Play Integrity API Checker” from the Play Store. If you fail “BASIC” or “DEVICE” integrity, X will not let you log in.

• The Fix: You need to update your PlayIntegrityFix module (by chiteroman) in Magisk/KernelSU to the latest version to pass the device check again.

Summary:

If you are using a modded app to block ads, that app is now blocked. You must use the official app or the mobile browser.