
Hybrid Configuration Troubleshooting
Hi, In this article I will mention of some troubleshooting methods against common issues that cause the Hybrid Configuration to fail. At this stage I assume that you have completed the prerequisites and prepared your tenant for the integration. These steps include registering the UPNs (User Principal Names), domains that are planned to be used […]

/PrepareAD fails with error message: ‘A hybrid deployment with Office365 has been detected.’
Hi, As you all know before Exchange Server 2013 or its Cumulative Update is installed, you need to prepare the Active Directory forest and domain(s). However you may have an on-premise Exchange Server environment co-existing with an Office 365 tenant. When this is the case and you run the /PrepareAD switch, the Prerequisite Analysis will […]

The attempt to connect to http://… using “Kerberos” authentication failed.
Hi, When you launch Exchange Management Console and get a Kerberos authentication failed error message I suggest you to check the proxy settings of the Client Access Servers. Run the following commands to check the proxy settings and either clear or update the existing settings with the correct proxy settings.
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netsh winhttp show proxy |
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netsh winhttp reset proxy |
You […]

Server in Database Availability Group is not started
Hi, You may get an error message like “Server ‘ServerName‘ in database availability group ‘DAG_Name‘ is not started” error message during a move mailbox database process. To start a specific mailbox server in the DAG run the following command:
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Start-DatabaseAvailabilityGroup DAG_Name -MailboxServer ServerName |
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The action can’t be completed because the file is open in noderunner.exe
Hi, You may get ‘The action can’t be completed because the file is open in noderunner.exe’ error in Exchange Server 2013 when you try to delete a mailbox database. This error is due to the noderunner.exe – a process of the Host Controller Service putting a lock on the index files. To remove the […]