windows server 2012 r2 - Shutdown button is missing

I have installed Windows Server 2012 Standard and shutdown button is missing:

It should look something like this:

I know how to shutdown windows with comandline, but that is not what I am asking, I am trying to figure out what went wrong, why it is missing, since other installations of same windows server have it.

Answer

The Shutdown button is missing

You are missing KB2919355.

The short answer is KB2919355 needs installing. HOWEVER, you
need to make sure you install the following updates in this order:

• Prerequisite: KB2919442



• Install KB2919355 that has multiple downloads in it, which can be directly downloaded from the Microsoft Download Center:

  
  



• NOTE: Once downloaded, these updates need installed in the following order

  
  
  
  
  • clearcompressionflag.exe
  
  
  • KB2919355 (Reboot after installation, if fixed you can skip the rest)
  
  
  • KB2932046
  
  
  • KB2959977
  
  
  • KB2937592
  
  
  • KB2938439
  
  
  • KB2934018
  
  

Once KB2919355 is installed and you reboot, you should now see
the Power and Search buttons on the start screen as displayed below:

Final Notes

Once KB2919355 is installed, run Windows Updates and you’ll
probably need to install a few hundred updates again.

Source Missing Power and Search Button On Start Screen

---

Workaround

• Move mouse to bottom right of screen adjacent to clock, and then move the mouse up and click on Cog wheel:

  
  

  




• This will open the following menu to select different options:

  
  

  




• Click the Power button:

  
  

  

Source Where is Shutdown button in Windows Server 2012 Release Candidate?