Find which DC a computer is authenticated to

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There is a quick and easy way to check which Domain Controller your windows PC is authenticated to via the command line.

Step 1: Open Command Prompt and Enter Command

Click Start and enter CMD (Windows Vista/7/2008) or Start → Run → CMD (Windows XP/2003)

When the CMD window opens, enter the following and hit enter:

echo %logonserver%

or alternatively use the following command and hit enter:

set L

You can also use the following command to get more information.

nltest /DSGETDC:

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