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Welcome to Exchange Server Tips & Tricks

How to Fix Exchange 2013/2016 Cannot Login ECP or OWA Error

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While working on system its quite natural having such issue, this error may be due to accessing outlook multiple times in a network. But mostly this happens because of entering an incorrect method for “OWA” and “ECP” Virtual directories.

How to Rebuild ECP Virtual Directory

Follow the below points:

First use Remove-ECPVirtualDirectory to remove Exchange control Panel virtual directories.

Then use New-ECPVirtualDirectory for creating an Exchange Control Panel virtual directory.

To overcome such issue follow the below workarounds:

Solution for OWA Virtual Directory

, open EMS (Exchange Management Shell), after this run the below given command in order to change from authentication method of OWA Virtual directory to Windows authentication

Solution for OWA Virtual Directory

Second, you have to run the below command on both application Client Access as well as Mailbox Servers for restarting the Internet Information Services (IIS):

iisreset /noforce

Solution for ECP Virtual Directory

First open Windows PowerShell.

Then type the below command and then click enter.

Solution for ECP Virtual Directory

After that again run the below command on both application i.e. Client Access and Mailbox Servers to restart the Internet Information Services i.e. IIS.

iisreset /noforce


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