Exchange 2016 ECP redirects to Exchange 2010 ECP

Today’s article will show why Exchange 2016 ECP redirects to Exchange 2010 ECP after you login. Let’s start by the beginning. You have Exchange Server 2010 running in the organization. You installed a new Exchange Server 2013/2016 in the environment next to the Exchange Server 2010. The Exchange servers are now in coexistence.

After you finish installing Exchange Server 2013/2016, you like to log in to ECP (Exchange Control Panel). After entering your credentials, the Exchange 2010 ECP appears. Why is that happening, shouldn’t you see the Exchange 2016 ECP? Read more to find the fix and the solution to it.

Exchange 2016 ECP redirects to Exchange 2010 ECP

Log in to the Exchange Server 2016 and start a web browser. Before you start, I recommend deleting the cache of your browser. Go to the URL https://localhost/ecp. If you get a warning of the certificate, proceed further.

Log in with your administrator credentials.

Exchange 2010 ECP is showing after entering the credentials.

Why are we getting redirected to ECP 2010, and what is the solution for Exchange 2016 ECP redirect to Exchange 2010 ECP?

Fix for Exchange 2016 ECP redirects to Exchange 2010 ECP

First, find the Exchange version with PowerShell. After that, add a question mark and the Exchange Client version after the URL https://localhost/ecp. It will look like the following:

• Exchange Server 2016: https://localhost/ecp?ExchClientVer=15.1
• Exchange Server 2013: https://localhost/ecp?ExchClientVer=15.0

We are running Exchange Server 2016, and that’s why we are going to use https://localhost/ecp?ExchClientVer=15.1. Copy and paste the URL in the browser. Exchange Server 2016 ECP is showing, great!

From now on, you can use that URL in your browser to reach Exchange Server 2016 ECP. Do you want to get back to Exchange 2010 ECP? Remove the extra string that you added.

Solution for Exchange 2016 ECP redirects to Exchange 2010 ECP

The Exchange 2016 ECP redirect to Exchange 2010 ECP is happening because the administrator mailbox is on an Exchange 2010 mailbox database. If you move the mailbox to the Exchange 2016 mailbox database, this will not occur. You will be able to directly login to Exchange 2016 ECP with the URL https://localhost/ecp.

Read more: Disable external access to ECP Exchange 2016 »

Conclusion

In this article, you learned why Exchange 2016 ECP redirects to Exchange 2010 ECP. The solution to this problem is to move the administrator mailbox to the Exchange 2016 mailbox database. If you don’t yet want to move the mailbox, you can append the Exchange version to the URL, as shown in the article.

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