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Multiple failed logon attempts from "Windows Manager\DWM-#"

Posted on 2014-09-15
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Last Modified: 2014-10-24
Hello,
During a recent network audit, we noticed that Windows 8, and server2012 machines have multiple failed logon attempts from the users "Window Management\DWM-1" (-2 -3 etc). After a bit of research I have found multiple articles on the Desktop Windows Manager hogging resources, or failing to start, but I cannot seem to find anyone who has experienced (or noticed) that these service accounts are creating failed logon attempts. I was hoping someone might be able to shed some light on this.
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Question by:CCtech
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Expert Comment

by:Rob Miners
ID: 40324773
If you are using McAfee Agent (MA) 4.8 P1 check this link for relevent information.
https://kc.mcafee.com/corporate/index?page=content&id=KB81557

Because of Desktop Window Manager (DWM-X is the command), Agent-to-Server Connection (ASC) fails on Windows 2012 R2 servers and Windows 8 clients.
NOTE: The -X entry above is a random number for a user that Desktop Windows Manager creates.

Examples:
 window manager\dwm-1
 window manager\dwm-2
 window manager\dwm-3
 window manager\dwm-4

And this one for an update
https://kc.mcafee.com/corporate/index?page=content&id=KB56057
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by:CCtech
ID: 40333058
Thank you for the reply Rob. Unfortunately, we are not using any mcafee products.
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Accepted Solution

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Rob Miners earned 2000 total points
ID: 40334078
Check with Task Manager on one of the systems for Users logged on as dwm-1, dwm-2, dwm-3 etc..
Then do a Clean Boot re applying items until you find out what software is causing the dwm user sessions.
https://support.microsoft.com/kb/929135/en-us

ref# http://social.technet.microsoft.com/Forums/windows/en-US/29a96616-c942-4d33-9a0b-c4fa5a20c6b4/why-is-desktop-windows-manager-12345-or-6-in-task-manager-in-windows-8?forum=w8itprosecurity#79974b8e-2ac1-438f-8527-80c5b7074ade

Also on a system with the problems run this command line and check the output

Type or copy/paste the below commands and then press the Enter key after each command.

wevtutil qe application "/q:*[System[(EventID=1000)]]" /rd:true /f:text /c:25 > "%userprofile%\Desktop"\EventID1000.txt

note: check for "Source: Application Error"

wevtutil qe application "/q:*[System[(EventID=1001)]]" /rd:true /f:text /c:25 > "%userprofile%\Desktop"\EventID1001.txt

note: check for "Event Name: AppHang"

Check the files for clues that may lead to a solution to your problem.

Also ensure that you have the latest device drivers installed.
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