In Exchange 2010/2016, you might come across a strange error as shown below when sending email: Failed to process message due to a permanent exception with message Invalid named property Solution: To fix this problem, you need to move the mailbox to another store with a specific switch: New-MoveRequest “User” -DoNotPreserveMailboxSignature -TargetDatabase Store1 Once the […]

After rebooting a server we found the following error in the event logs along with whole stack of others: Right, so the Microsoft Exchange RPC Client Access would not start. To fix this error, you can do the following: Locate the Remote Procedure call (RPC) Locator service and set it to automatic and then start […]

Exchange Admins don’t always like patching and they say, well it’s working so why fix something that ain’t broken. Well, if you are on a CU earlier than CU15, you should really consider upgrading. CU14 and CU15 have a number of fixes in them but not only that, you need to apply the security patches […]

At a client recently we had an Exchange 2016 Server that would not install the March 2020 Security update. The setup would start and then end with the error below after a few minutes: Error 1642 generally implies that it cannot find the version installed. Even though we had Exchange 2016 CU15 installed (as per […]

In this series of videos, we take a look at building your Exchange 2016 environment from scratch. This includes: Building your domain and forest. Joining your machine to the domain. Installing the prerequisites for Exchange Installing Exchange 2016 using the GUI Installing Exchange 2016 using unattended mode. What will follow in the series is: Creating […]

As part of the migration to Exchange 2016 you might have to recover an Exchange 2010 member server or both if you have storage corruption or the VM’s OS has simply become unusable. Recovery is done and when you try add the member server/s back to the Database Availability Group (DAG), you presented with a […]

In Exchange whether it is Exchange 2010 or 2016 or maybe even 2019, when you setup a Database Availability Group (DAG) requires Failover Cluster Manager to be installed and when the DAG is formed you can see it in Failover Cluster Manager. In normal circumstances your DAG members will come online after a reboot but […]

When decommissioning Exchange 2010 Hub servers, you sometimes run into a small issue where you forget to remove the server from all your send connectors and you are presented with the error below: The error is self explanatory. Head over to the Exchange Management Console (EMC) -> Expand Organization Configuration and click on Hub transport. […]

In one of my older blog posts we encountered an error while trying to decommission a DAG and remove the members. Now when trying to do a recovery installation, the error below is pretty straight forward compared to what is listed in the previous blog post but the removal process is the same. As you […]