Relic are trying to deal with the C00T01R-2x-01 error on their end, but in the meantime there are a few things you can do to maybe get around the C00T01R-2x-01 error.

Update Your Game to the Latest Version

Relic have been releasing hotfixes, so first make sure that your game has them all. Turn on the automatic updating in your Steam client:

Go to your Steam client Select “Library” tab Right-click on the Age of Empires 4 game Select “Properties” from the list Select “Updates” tab Choose “Always Keep This Game Updated” feature

Now you can be sure that Steam will update your game every time a new batch of bug fixes is being released.

Turn off Your Antivirus and Firewall

The official statement from the developer is the following:

This means that you need to temporarily disable your firewall and antivirus settings to get around error C00T01R-2x-01.

If you’re running an in-build Windows Defender antivirus, then you can temporarily turn it off by following these steps:

Press the Start button Go to “Settings” tab Select “Update and Security” feature Go to “Windows Security” tab Select “Virus and Threat Protection” feature Go to “Manage Settings” option Set the real-time protection to OFF

You can do the same with the Windows firewall:

Press the Start button Go to “Settings” tab Select “Update and Security” feature Go to “Windows Security” tab Select “Firewall and Windows Protection” feature Open “Windows Security” settings Switch the Microsoft Defender Firewall option OFF

When you’re finished playing, you can switch both antivirus and firewall back on.

Reinstall Your Game

The support team of Age of Empires 4 also added the following statement:

If you’re using any other antivirus software besides Windows Defender, then you might need to turn it off and re-install the game:

Go to your Steam client Select “Library” tab Right-click on the Age of Empires 4 game Go to “Manage” option Select “Uninstall” from the list

After that, reboot your PC, start the Steam app, and install Age of Empires 4 by pressing the Install button.

Enable Set Time Automatically

Another statement from the developer asks players to check their time settings:

You can set your time automatically by following these steps:

Press Start button Go to “Settings” menu Select “Time and Language” option Go to “Date and Time” tab Set “Set Time Automatically” option to “ON”

Press OK and try to log-in to your Xbox Live account once again and see whether you get the C00T01R-2x-01 error.

Adjust Internet Explorer Settings

Internet Explorer may also prevent you from connecting with the Xbox Live services, hence causing error C00T01R-2x-01. Try to do the following:

Launch Internet Explorer app Click on Tools menu (Gear icon) Select “Internet Options” menu Go to “Security” tab Set the “Security Level for the Internet Zone” to “Medium” Go to “Privacy” tab Set the “Privacy Setting” to “Medium”

After turning on the medium security settings for your connection, you need to clear your cache and cookies:

Launch Internet Explorer app Click on Tools menu (Gear icon) Select “Internet Options” menu Click on the “Delete” button Select “Cache” and “Cookies’ from the list Confirm by pressing “Delete”

Those are the official solutions to the connection lost error in Age of Empires 4. If you were looking for other AoE4 guides, then check out our dedicated hub page.

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