IIS SMTP Virtual Server Component No Longer Supported
Please consider this a quick PSA (Public Service Announcement) as it is still common that I run into environments with the IIS SMTP service still running and processing mail.
While …
Security
Sign-In Error 5000811 — Unable to verify token signature. The signing key Identifier Does Not Match Any Valid Registered Keys
The error message “Sorry, that didn’t work. Please go back to office.com and try again” is probably one of the most vague that I’ve seen. It’s up there with “please …
Why Is The Exchange Security Update Not Installed?
The issue of “Why is the Exchange Security Update not installed?” has popped up frequently over the last few months due to the number of security releases for on-premises Exchange.…
Does Manually Running Azure AD Connect Change Schedule?
Despite the current versions of Azure AD Connect running the main synchronisation task every 30 minutes, there are still times when we want to force the task. As a result …
AD FS Web Application Proxy Re-Establish Proxy Trust
In the Tailspintoys environment the AD FS Proxy was offline for month. It was unable to contact the AD FS server on the internal network, and this allowed the short …
Is Exchange Fully Updated? If Not, Go Update Now
The Exchange team just posted that the September 2021 updates are going to be slightly delayed. The priority will always be to ship quality updates rather than force it out …
Remote Desktop Connection Manager Download (RDCMan) 2.81
Finally we have good news for all fans of the Remote Desktop Connection Manager (RDCMan) tool! It has risen from the ashes, and is now part of Sysinternals.
Over the …
Microsoft Defender for Identity–Replaced Domain Controller
The below environment was migrated from one hosting provider to another. Unfortunately one DC did not survive, and it was removed from the domain. This was done by using dsa.msc…
April 2021 Exchange Security Updates
Today is patch Tuesday for April 2021 and there are critical Exchange server security updates in the release. You can review all of the affected products on the MSRC blog…
Exchange & TCP/IP Port Range
The below is an interesting result after installing Exchange. The act of installing Exchange will change how TCP/IP operates on the server with respect to ephemeral connections.
This may manifest …