The “Attestation Denied” error on X (formerly Twitter) means the app’s security check has failed to verify that your device or the app itself is genuine.

This is a recent anti-bot and security measure implemented by X. It typically affects users with rooted phones, custom ROMs, modded apps (like ReVanced), or active VPNs.

Here is how to fix it based on your situation:

1. The Immediate Workaround (Easiest)

If you just need to access your account right now, use the browser.

• Open Chrome, Safari, or Firefox and go to x.com.

• Log in there. The web version does not perform the same strict attestation checks as the app.

• Tip: You can “Add to Home Screen” to create a web-app that looks and feels almost like the real app.

2. If You Are Using a Modded App (ReVanced, NeoFreeBird, etc.)

X is aggressively blocking third-party clients and modified APKs.

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

• For ReVanced Users: You may need to update your patches or look for a “Disable Attestation” patch, though X often patches these workarounds quickly.

Also Read : Error Dolphin-028 | Most Common Fix

3. If You Are Rooted or Custom ROM (Android)

If your phone is rooted (Magisk/KernelSU) or running a custom ROM (LineageOS, GrapheneOS), X is flagging your device as “compromised.”

• Check Play Integrity: Download a “Play Integrity API Checker” from the Play Store. If you fail the “MEETS_DEVICE_INTEGRITY” check, X will likely block you.

• The Fix: You need to fix your “Play Integrity” status. This usually involves updating your Play Integrity Fix module (in Magisk) or hiding the X app in your root manager (DenyList).

4. If You Are on a Standard Device (No Root/Mods)

If you are a regular user and this is happening:

• Turn off VPN/Proxy: Disable any VPNs or ad-blockers (like AdGuard) temporarily, then try logging in.

• Clear Storage: Long press the X app icon -> App Info -> Storage -> Clear Data/Storage.

• Update: Ensure you are on the absolute latest version of the app. Older versions are blocked from logging in.

Summary:

The error usually means X thinks your device is “fake” or “unsafe.” Using the mobile browser is the fastest way to bypass it.