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Hi there Jerry
Have you tried restarting the Server? As usually this is a crashed DHCP service which will restart when the server is restarted
Please let me know
If you can have someone check if the main switch(es) are on and powered that connects the sever and to the other switches? If one of these have failed it would stop any communications, so try to have someone check if at least they are powered on.
No problem Jerry, glad it was solved.
Let me know if you need anything else and please remember the rating