ECP

How to Access the Exchange (2013/2016) Admin Center (ECP) with Mailbox still on older Exchange

When trying to access the Exchange Admin Center on either an Exchange 2016 or 2013 server with your Admin user account, you could potentially see an error (500 Unexpected Error) or get redirected to an older Exchange (2010 or 2013) and therefore not get access to the Administrative interface, that …

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