Importing Updates to WSUS failes with Error (80131509).
Enable TLSv1.2 for .Net Framework 4.0:
reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft.NETFramework\v4.0.30319 /V SchUseStrongCrypto /T REG_DWORD /D 1

Reboot Server and try again.

Beginnig with Server 2012, it is no longer possible to setup Security for RDP-Tcp with a GUI. Here is the WMI Command:

wmic /NameSpace:\root\cimv2\TerminalServices PATH WIN32_TSPermissionsSetting.TerminalName=“RDP-TCP“ call AddAccount „DOMANIN\GROUP_OR_USER“,X

Where X is :

0 = WINSTATION_GUEST_ACCESS
1 = WINSTATION_USER_ACCESS
2 = WINSTATION_ALL_ACCESS

To show already configured security:
wmic /NameSpace:\root\cimv2\TerminalServices PATH WIN32_TSPermissionsSetting.TerminalName=“RDP-TCP“ get StringSecurityDescriptor

#Rebuild the PerformanceCounter Data

lodctr /r

Gratuitous ARP will be no longer sent with Windows Versions > 2003. Only Clusterservice can do that and there is no possibility to manually force a GARP.

( Except writing your own Kernel Mode NDIS Driver and digitally sign it by MS)

– Boot into Windows 2008 Server CD/DVD

– Choose Languages

– Choose Repair your Computer (upper left)

– Make sure “System Recovery Options” has found a Operating System

– Choose Command Prompt

– bootsec.exe /FixMbr

– bootsec.exe /FixBoot

– bootsec.exe /RebuildBcd

– Reboot and everything will go fine 🙂