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It is important to install the patch for additional stability and reliability in the multiplayer environment and avoid issues accessing multiplayer matches. Age of Empires III: Definitive Edition is officially coming to Steam and the Microsoft Store on October 15th But before then, we’re excited to invite the Age community to join us for an early look as part of a Multiplayer Stress Test come mid-September. The AgeIIIESOPatch_Full will allow you to access multiplayer services without routing through the deprecated ESO service. We apologize for any inconvenience this may cause. Due to the age of the title, we have no way to automatically apply the patch for you and you will have to come to our website download linked below to apply the patch manually. To continue accessing the multiplayer services: We have created a patch that points to a new backend owned by Microsoft that you must manually install prior to September 1, 2021. The critical factor driving this change is that the ESO domain on which this multiplayer service currently resides is no longer under Microsoft’s control and it will be repurposed by its new owners on that date.
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