Error 1747: The Authentication Service is Unknown


Do not ask me why, my notebook Windows 7 64-bit woke up this morning bothering me with this error

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Windows Could not start the Windows Event Log service on Local Computer.
Error 1747: The authentication service is unknown.

I will not even attempt to look for explanations, not worth it. The solution to so, at least in my case, was to follow the steps below:

  • Go to the Start Menu, type cmd and right click or (Ctrl + Shift and hit Enter), and select “Run As Administrator”.

  • Type the following commands, each followed by pressing enter.

ipconfig /flushdns

nbtstat -R

nbtstat -RR

netsh int reset all

netsh int ip reset

netsh winsock reset

netsh interface tcp set global autotuninglevel=disabled

// http://support.microsoft.com/kb/811259

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