Domain Controller Ports

Recently I was asked by a client to produce a list of firewall ports that are used by Active Directory Domain Services (AD DS), specifically those for domain controllers.  This is what I came up with: TCP and UDP 389 Directory, Replication, User and Computer Authentication, Group Policy, Trusts LDAP TCP 636 Directory, Replication, User... Continue Reading →

Server 2016 Versions & Builds

When Microsoft introduced the Operating System as a Service with Windows 10, a lot of people got started getting confused because of the different version numbers and build numbers, all the while Microsoft was telling us it was really the same operating system.  Okay, I think we have it clear now... three years later. So... Continue Reading →

Offline Files: Groan!

You’ve configured Folder Redirection in Group Policy, and it works as expected… as long as you are connected to the network.  As soon as you disconnect, things stop working.  That may be a real inconvenience if you are redirecting your Photos, but if you have redirected your Desktop folder to a network share, there is... Continue Reading →

KB4103723: DO NOT APPLY!

Hey folks, if you know what is good for you, do not apply this patch yet.  KB4103723 protects against a CredSSP vulnerability that has not yet been compromised.  However, it will break lots of things in your system, including RDP and Hyper-V connections.  Errors will include CredSSP errors when trying to connect via RDP (or... Continue Reading →

Scheduling Server Restarts

If you manage servers you have likely come to a point where you finished doing work and got a prompt ‘Your server needs to reboot.  Reboot now?’  Well you can’t reboot now… not during business hours.  I guess you’ll have to come back tonight… or this weekend, right? Wrong.  Scheduling a reboot is actually pretty... Continue Reading →

Remotely Enable RDP

Like most IT Managers I manage myriad servers, most of which are both remote and virtual.  So when I configure them initially I make sure that I can manage them remotely... including in most cases the ability to connect via RDP (Remote Desktop). But what happens if you have a server that you need to... Continue Reading →

Since When…?

Those of us who have been in the IT industry for a while remember the heady days of never having to reboot a server... otherwise known as 'The days before Windows Server.'  Those days are long gone, and even non-Windows servers need to be patched and restarted. But how do you know when it last happened?... Continue Reading →

UNC Path Nightmare

Anyone who has taken a basic networking course will understand that UNC (Universal Naming Convention) paths are one of the common ways we in IT access file shares across our local networks.  They will usually look like this: \\oak-mgt-01\Sharename.  Of course, you can see all of the shares on a particular server by just entering... Continue Reading →

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