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Category / HowTo

A while ago, I posted an article about the configuration of Exchange to use ADFS Authentication. Here an update what to do if you see the following error: https://owa.contoso.com/owa/auth/errorfe.aspx?msg=WrongAudienceUriOrBadSigningCert??? Check that you that you have the correct certificate: Get-ADFSCertificate Token-Signing | Select-Object Thumbprint You might need to import the Certificate above: adding the AD FS […]

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Exchange Server

I shared my experience with Exchange 2016 on Windows Server 2016 in the last few weeks. The most annoying problem, in my opinion, is the Get-Help Issue! I must admit, that I use Get-Help a lot, mostly because the Help is great and why remember every option if you can use Get-Help? Nevertheless, there is […]

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In many Blogs the wrong command is still listed to turn on the¬†performance mode for macOS Sierra Server. The correct one for Sierra to turn it on: sudo nvram boot-args=”serverperfmode=1 $(nvram boot-args 2>/dev/null | cut -f 2-)”

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A reliable time source within an Active Directory environment (or networks in general) is critical. A prefer an expensive GPS Clock; others don’t care… I decided a while ago that I sync my DCs with an NTP source. Please keep in Mind, that your servers need access to the NTP Servers on the UDP Port […]

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A friend called me today with a urgent question: Why did our Load Balancer shows all Nodes in our AD FS Farm as down? The answer is a bit complicated: AD FS (Active Directory Federation Services) doesn’t answer correct to the bind/probe and therefore, the Load Balancer marks the Server(s) as down. The Problem is […]

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