April 2024 Exchange Server Hotfix Updates – HU

Exchange April 2024 Hotfix Update

Want some updates to go with your updates?  That’s pretty much what you are getting with the April 2024 Exchange updates.  We can split the features which are part of the April 2024 release into two main areas:

  1. Fixing the multiple things that broke with the March 2023 Security Update (SU)
  2. Adding net new features

The April 2024 HU is available for the following builds of Exchange Server:

  • Exchange Serve
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Upgrade to Azure Standard Load Balancer

Azure Outbound Network Options

On September 30, 2025, the Azure Basic Load Balancer will be retired. For more information, see the official announcement. If you are currently using Basic Load Balancer, make sure to upgrade to Standard Load Balancer prior to the retirement date.

You can use the guidance to upgrade, please ensure that all of the steps are followed when you test and then implement the change.  This is due to the fact… Read the rest “Upgrade to Azure Standard Load Balancer”


Unable To Install or Launch Exchange HCW

Unable To Launch Exchange Hybrid Configuration Wizard

You want to run the Exchange Hybrid Configuration Wizard (HCW) and after clicking the link to the HCW in the admin portal or manually browsing to the shortcut URL you are unable to either launch or install the HCW.  Despite using Edge, the HCW application just does not install and/or launch.  All you get is the initial prompt to open the file and nothing else.

For example, if we go to the shortcut … Read the rest “Unable To Install or Launch Exchange HCW”


Exchange 2016 – CU23 Now Required

Exchange 2016 CU23 Now Required

With the release of Exchange 2019 CU14 today, a separate announcement was added to the release post to highlight that only CU23 is supported for Exchange 2016.  Exchange Server 2016 is supported until the end of its support in 2025, however in order to receive support and to obtain Security Updates (SUs) you must be running CU23.  CU22 and all older releases of Exchange 2016 are no longer supporte… Read the rest “Exchange 2016 – CU23 Now Required”


Exchange 2019 CU14 Released (2024 H1)

Exchange 2019 CU14 Download

Exchange 2019 CU14 has been released to the Microsoft Volume Licensing Center and the public Microsoft Download site!  Exchange 2019 has a different servicing strategy than Exchange 2007/2010 and utilises Cumulative Updates (CUs) rather than the Rollup Updates (RU/UR) which were used previously.    CUs are a complete installation of Exchange 2019 and can be used to install a fresh server or to upd… Read the rest “Exchange 2019 CU14 Released (2024 H1)”


Exchange Healthcheck Script– Unable to Connect to Server

Exchange Healthcheck Script - Unable to Connect

Below is a repro of a customer situation where the Exchange Healthcheck script was unable to connect to a remote Exchange server.  The Healthcheck script would run locally with no issues, and reported a clean bill of health.

Note that the expected output log was not present after running the script.

In the command below, we are trying to remotely assess sever Exch-2019-1

Exchange Healthcheck Script - Unable to Connect to Server

Troubleshooting Thoughts

It wa… Read the rest “Exchange Healthcheck Script– Unable to Connect to Server”


End of Exchange 2019 Mainstream Support

Exchange 2019 Support Lifecycle Policy

Today marks the end of Exchange 2019’s mainstream support.  This will likely resurface the discussion about what do we do with on-premises Exchange, where is the next version and do we even still need Exchange Server if all mailboxes are in Exchange Online?  While there is a solution to removing the last Exchange Server from on-premises it does have it's caveats and considerations.  Please ensure … Read the rest “End of Exchange 2019 Mainstream Support”


Enable DMARC For OnMicrosoft.com Domains

DMARC Record For onmicrosoft.com Domain

It is possible to add a Domain Based Message Authentication Reporting and Conformance (DMARC) record for your onmicrosoft.com domain in M365.  Is that a good thing?

Well, your viewpoint may depend on your experiences with this domain.  If you actually use the onmicrosoft.com domain to send email, then yes!  Adding the DMARC record enables the DMARC alignment check to pass and the mail to be success… Read the rest “Enable DMARC For OnMicrosoft.com Domains”


How To Generate File Hash Using Certutil

Create File Hash using Certutil

Windows has the ability to easily generate a hash for a given file using the Certutil.exe utility.  Administrators may have previously used to this tool when they need to generate TLS certificates or to perform other tasks against AD Certificate Services.  As an example of the former, this was a common task for AD FS certificates as described in this post.

To generate the file hash we will use the … Read the rest “How To Generate File Hash Using Certutil”


Using PowerCfg To Set Server Power Plan From Command Line

Set Power Plan Via Command Line

Being able to automate and set Power Plan options via the command is useful for both automation and tasks on Server Core.  We can use powercfg.exe to control power plans - also called power schemes - to use the available sleep states, to control the power states of individual devices, and to analyze the system for common energy-efficiency and battery-life problems.

Below are multiple examples of the … Read the rest “Using PowerCfg To Set Server Power Plan From Command Line”