Ensure ports and 443 are open, as these are used for the manifest download.
Elder Scrolls Online typically occurs when the game launcher cannot download or read the manifest file required to update the game . This is usually caused by a connection interruption, restrictive firewall settings, or corrupted local files. How to Fix Error 206 Eso Error 206 Patch Manifest Error
Close the launcher and ensure it isn't running in your system tray. Ensure ports and 443 are open, as these
Sometimes the launcher's temporary data becomes corrupted. Ensure ports and 443 are open
A stale network cache can prevent the launcher from reaching the update server. Press Windows Key + R , type cmd , and press Enter. Type ipconfig /flushdns and hit Enter. Restart your computer and try the update again.