Not just abstract theory, but lived experience - everything I encounter on my excursions into the wilderness can be found here!
Active Directory Certificate Authority - add issuer informationNew!!
A 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?
I 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
In 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!
Who 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 […]
Create groups in Entra ID with PowerShell
Creating objects in the Entra Admin Center is quite intuitive, but is only suitable for individual requirements. For larger numbers of groups, it is better to use PowerShell. Select the module Microsoft provides a comprehensive PowerShell module called Microsoft.Graph. In addition to Entra ID, this includes various other functions for managing services, such as Microsoft […]
Multiple email forwarding via inbox rules – not with Exchange Online!
Many customer projects still revolve around moving a local Exchange organization to the cloud. Here, I repeatedly encounter special configurations for which a different solution must be found in the cloud. Initial situation This case involved email forwarding via inbox rules. On one side, a forwarding rule was set up in a mailbox that forwarded […]
Restore user objects in Entra ID
Similar to Active Directory, Entra ID uses a type of recycle bin to store deleted objects for a certain period of time (30 days). This enables quick recovery. However, there may be specific scenarios in which the use of PowerShell is more effective, for example Simple restore with Graph PowerShell A simple restore with default […]
