Not just abstract theory, but lived experience - everything I encounter on my excursions into the wilderness can be found here!
Practical Tip #02 - automatically update Conditional Access rules for admin roles
Lesedauer 5 MinutenProblem: Conditional access rules are applied specifically to roles that include the word “Administrator” in their names. Microsoft is constantly adding new roles, but these are not automatically included in such rules. Task: Automate the addition of new roles using scripts. Script structure You can find the complete script in my Script Nest. The following […]
Practical Tip #01 - Assemble certificate keys into a PFX file
Lesedauer 2 MinutenProblem: A certificate is provided as separate files for the public key (CER, CRT) and the private key (KEY). However, a combined file (PFX) is required. Task: Combine the separate files into a single PFX file Option 1: Using a web-based solution Providers such as SSLShopper offer various solutions for managing certificates, such as an […]
Watch out! How sending from aliases can cause email filter policies to fail
Lesedauer 4 MinutenSending from an alias is a great feature! Gone are the days when users had to use multiple mailboxes (or set up a workaround via the IMAP protocol) if they wanted or needed to use multiple sender addresses for their own mailbox. This might be necessary in the following scenarios, for example: While Exchange Server […]
Reach your goals faster - with direct download links to Entra products!
Lesedauer 3 MinutenIn my customer projects, I frequently need resources that can only be found in the Entra Admin Center. Sometimes Microsoft also moves products from the public Download Center to pages that require sign-in. This happened, for example, with Entra Connect Sync. However, there are a few tricks I’d like to share here that let you […]
Run scripts with confidence - using code signing certificates!
Lesedauer 6 MinutenOn the one hand, PowerShell is a fairly powerful tool for automation. On the other hand, Microsoft and other vendors now expect users to have a basic understanding of how to use PowerShell.Some functions aren’t even available in a graphical interface at all, but must always be modified using PowerShell. It’s also reasonable to assume […]
Easily copy address books from Exchange Server to Exchange Online!
Lesedauer 3 MinutenExchange address books can be used to group mailboxes into logical units, such as company divisions. This gives employees an overview of the company structure and allows them to see which divisions an employee is assigned to. One of my customers uses these address books quite extensively. At the same time, they are currently switching […]
Active Directory Certificate Authority - add issuer information
Lesedauer 2 MinutenA customer approached me and asked whether it would be possible to store additional information in his certification authority. Specifically, company information such as name and address would be stored. This would eliminate the need to enter this information manually each time a certificate is requested. The aim was to increase the internal trustworthiness of […]
Beware of pitfalls - do you have Microsoft's security baselines under control?
Lesedauer 4 MinutenI regularly have the “pleasure” of installing new domain controllers (DCs), for example when new operating system versions are released. Currently, this is Windows Server 2025. I have already done this successfully in various environments. However, in one environment, I encountered a problem that could potentially have major implications. I will briefly describe this below. […]
Beware of pitfalls – changing the primary email address in Exchange Online
Lesedauer 4 MinutenIn my projects, I repeatedly encounter special circumstances. Typically, these special circumstances did not occur in previous similar projects or only arise in a specific constellation.These special circumstances can then lead to major disruptions if they are not identified and remedied in time. One such circumstance is the seemingly simple change of a mailbox's primary […]
External communication in Teams not working? A “restart” will help!
Lesedauer 2 MinutenWho hasn't experienced it – a strange problem whose solution cannot be explained by logic. There's a reason for the saying: Reboot is good! Restarting the device often solves a problem faster than analyzing it and trying to find a solution. The following issue in Teams, which I have encountered several times, also falls into […]
