Im getting countless logon failures on one of my Domain Controllers. All of the say the same:
We have renamed the user name since then we are getting this error message would you please help to find more details about the same
Based on my research:
The Cause may be :
proxy (ISA) was sending many NULL auth requests.
the proxy machine.
Enable Netlogon debug logging:
A: run the following command:
Nltest is included as part of Windows Server 2008 and is also available as part of the Support Tools packages on the installation media for Windows Server 2003, Windows
XP, and Windows 2000.
B: Stop NetLogon, and then restart NetLogon.
please reboot the server and check the result. And also
please download the newest package and install it on the DC, and scan your DC with antivirus program.
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