Allow non-administrators RDP Access to Domain Controller

Step-by-step guide

1. net localgroup "Remote Desktop Users"
2. net localgroup "Remote Desktop Users" /add corp\vasya.pupkin
3. open gpedit.msc
4. Go to Computer Configuration -> Windows settings -> Security Settings -> Local policies -> User Rights Assignment
5. Find the policy Allow log on through Remote Desktop Services
6. Edit the policy by adding the local group Remote Desktop Users (like this: corp\Remote Desktop Users), a domain user, or a group (like this: corp\ras-users) to it
7. gpupdate /force
8. Enjoy!

How to reset grace period on Windows 2008/2012/2012R2 terminal Server

Step-by-step guide

1. make your user's account owner of this register element:
   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\GracePeriod
   
2. The solution was to delete the REG_BINARY in
   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\GracePeriod
   Only leaving the default.

How to check Windows RDS grace period remaining days

Step-by-step guide

1. Logon to your server as an administrator Start--All Programs--Accessories--Right-Click on Command Prompt and choose Run as Administrator
2. Enter the following command:

wmic /namespace:\\root\CIMV2\TerminalServices PATH Win32_TerminalServiceSetting WHERE (__CLASS !="") CALL GetGracePeriodDays

Example:

    3. Enjoy!

Change Windows 2012 R2 Server Edition

Step-by-step guide

1. To determine which versions the server can be upgraded to run:

• DISM /online /Get-TargetEditions

      2.  As can be seen from the above screenshot this version of Windows Server can be upgraded to Target Edition : ServerDatacenter

           To complete the conversion between editions we use the DISM command with the following format:

• DISM /online /Set-Edition:<Version> /ProductKey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX /AcceptEULA

In the above example the target edition is ServerDatacenter