Exchange 2016

You have prepped for months, and tonight is the night!  It is the night of CAS namespace cutover to move the HTTPS namespaces from Exchange 2010 so that the point to Exchange 2013 or 2016.  DNS TTL was decremented.  Servers are all fully updated as are the Outlook clients and we are good to go.

The DNS change kicks in, and Outlook HTTPS traffic hits Exchange 2016 and we enter a spiral of never endi… Read the rest “Exchange 2016 CAS Namespace Cutover Authentication Failure”

When troubleshooting cross-premises calendar availability issues, it can be useful to know the name of the local on-premises endpoint which is used.  By knowing the path and URL, you can then search the IIS logs for the path.

This will accelerate finding the correct entry(ies) and assist with troubleshooting.

The full listing of Hybrid deployment prerequisites is available on Docs.

Exchange 201

Perhaps the best thing to come to Exchange over the last 10 years was the Hybrid Configuration Wizard (HCW).  While many take this feature for granted, if you had to manually deploy Exchange 2010 SP1 hybrid to Exchange Online you will shudder at the mention of the Service domain.  But let’s not dredge up those memories…

Recently an update was released to the HCW, and initially the update looke… Read the rest “Beware the Exchange Hybrid Configuration Wizard Doppelganger”

For various reasons, the aforementioned Remove-HybridConfiguration cmdlet has been something that has been something I've had to review recently.

This cmdlet is not present in Exchange 2010, it is only available in newer versions of Exchange.  For example if we try to find this cmdlet on an Exchange 2010 server, it is not present.

Only the Get, New, Set and Update-HybridConfiguration cmdlets are avai… Read the rest “Remove-HybridConfiguration Cmdlet”

When reviewing a customer’s Exchange server to appraise the current state of their certificates, they saw an "unexpected" certificate on the Exchange server.

The below is an Exchange 2010 SP3 RU24 server with a repro of the issue.  There was nothing wrong, but the reason for seeing the additional certificate was not readily apparent to them.

Background

The customer was looking in Exchange Manag… Read the rest ““Unexpected” Exchange Certificate”

Managing and maintaining an Exchange server requires multiple actions.  Not only do the Exchange CU and security updates need to be installed along with the Windows OS updates, it is also required to update and maintain the .NET Framework.  This is not a new requirement, and has been a required task for many years now.  With that being said, there is now a tighter requirement and is enforced by Ex… Read the rest “Expediting NET Framework Install For Exchange”