I frequently use the command line for authenticating into various resources and every so often you get the following error:

"Multiple connections to a server or shared resource by the same user, using more than one user name, are not allowed"

Read more: Multiple Connections Issue

I haven't tested this on different server versions.  In this instance, I moved DHCP from a Windows 2003 Server to another Windows 2003 Server.

I've seen at least one other method which involved some command line activity but this method seems simple enough.

On both the source and the destination server, launch the DHCP Manager, right click on the server name, select:

Read more: Move DHCP to Another Server

You login to a server to do some work and you are greeted by the dreaded Windows Update countdown timer.  It seems like it's picked the most inconvenient time of day when in actuality, it won't restart when the computer is locked and now that you've unlocked it, it's counting down.

Read more: Stop a Pending Windows Update Restart

Have you ever noticed those odd folders under Active Directory DNS such as:

_msdcs
_sites
_tcp
_udp

Those are important -- don't delete them!

Read more: Fix Active Directory DNS

You right click on a mailbox, you select New Local Move Request, you go through the rest of the steps and then you wonder.  You can select the Move Request object to see if the process has been completed but with large mailboxes, you're left wondering how far along in the process is the move...

Read more: Exchange 2010 - Monitoring Mailbox Moves

For whatever reason, you might find yourself in a situation where you need to disable IPv6.  For me, it was to troubleshoot a problem being caused by IPv6 being enabled.  Pretty simple solution provided by Microsoft:

http://support.microsoft.com/kb/929852

Read more: Disable IPv6