Invalid Product Key: Exchange 2019

You cannot enter an Enterprise key into a Standard installation attempt, and vice versa. Furthermore, Evaluation Edition (which expires after 180 days) does not accept any product key until you manually convert it.

Open a support case with Microsoft Premier Support or via your Volume Licensing agreement. Provide the following: exchange 2019 invalid product key

Trying to activate via [Exchange Admin Center (EAC) or PowerShell] What I’ve Checked So Far: You cannot enter an Enterprise key into a