The ramblings of a computer geek
The time of on-premise Microsoft Exchange servers is beginning to draw to a close, although the Microsoft Exchange Server SE will continue, its feature complete essentially as of Exchange Server 2019, although there may be the odd minor changes here and there. Based on that replacing the certificate is a common task, the following instructions … Read more
Microsoft Windows 2016 does not support the newer encryption ciphers used by default by EJBCA (AES256-SHA256), therefore we need to generate a version of the certificate using the earlier encryption cipher type, i.e. TripleDES-SHA1 which is what is supported by the earlier version of Microsoft Windows, namely Server 2016. Check Encryption Ciphers Used Firstly get … Read more
Investigation into the loss of Rich Hybrid features for on-premise mailbox users, from around the beginning of November 2025. Exchange Version Says we need Exchange Server 2016 CU23 with April 2025 HU 15.1.2507.55, we are currently running 15.1.2507.58, so a later version than the minimum requirement, thus we are good on this version. Identified Issue … Read more
The document provides a simple guide to how to install and use the Microsoft Exchange Online PowerShell modules to interact with Microsoft 365 infrastructure for the purposes of administering the Microsoft 365 infrastructure and applications; i.e. how to setup your Developer Machine. You may be able to install modules without administrative rights by adding the … Read more
The document provides a simple guide to how to install and use the Microsoft Graph and Microsoft Exchange Online PowerShell modules to interact with Microsoft 365 infrastructure for the purposes of administering the Microsoft 365 infrastructure and applications; i.e. how to setup your Developer Machine. You may be able to install modules without administrative rights … Read more
The PowerShell profile, much like the profile within a Linux Shell session allows you to add/change things about the session when it starts. Find Profile Location By default your profile is stored within your user’s home directory on your Windows workstation, you can find where it is or where it might be by running: Create … Read more
Late to the game, but here’s how you do it. To manage the on-premise Exchange Servers from your workstation, you can use the following procedure to setup these tools for use on your workstation. 1. You will need to install Microsoft Visual C++ 2012 Redistributable (x64): https://www.microsoft.com/download/details.aspx?id=30679 2. Then install these Windows Optional Features: Reboot machine, … Read more
Even after designing, deploying and supporting Microsoft Exchange servers for longer than I choose to remember, I stumbled across something I never knew before yesterday; and that was why something was named the way it was. In Exchange 2007, Microsoft decided to remove the concept of “Administrative Groups”, however they needed to retain administrative groups … Read more
So you created an Exchange Online User and Mailbox but you’re still in a hybrid configuration where you are managing Exchange mailboxes on-premise. What this means is that the on-premise Exchange Organisation has no idea that the user exists, it doesn’t appear in Exchange Admin Center and it also probably won’t appear in the GAL. … Read more
We are currently going through a migration from on-premise Microsoft Exchange servers to Microsoft Exchange Online (Microsoft 365). We needed to determine what ActiveSync clients were in use to be able to provide guidance to users of what to do. So I wrote a simple script that retrieves all the mailboxes (that are enabled) and … Read more