NEW Unknown computers: There are no task sequences available for this computer

[m0rph]

Hi,

Suddenly, after entering the PXE password, no task sequences are available for Unknown Computers. All worked fine for years until last week, nothing was changed.
Our setup: 1MP, 3DP running config mgr version 2002.

WinPE time is correct, and I can ping MP and DP when I hit F8.
I already recreated the Unknown GUID's by changing HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SMS\COMPONENTS\SMS_DISCOVERY_DATA_MANAGER\CreatedUnknownDDR to 0 and restarting the SMS_EXECUTIVE service. Then removed PXE from DP and added it again.
Also, I removed TS deployments, and deployed them again.
I also created a new boot image just to be sure..

I have no logs on the client computer I try to install, which is normal as there is no task sequence found? Where do I start troubleshooting?

 

[m0rph]

OK, I did find smsts.log in X:\Windows\Temp\SMSTSLog and attached it here

Is the "Support Unknown Machines: 0" the problem here? I can confirm that it is enabled on the DP (PXE settings).

 

[m0rph]

OK, I solved the problem (after finding info online). The Unknown Computer (x64) GUID was hijacked by a recently built machine. I used following WQL query to make a collection:

select SMS_R_SYSTEM.ResourceID,SMS_R_SYSTEM.ResourceType,SMS_R_SYSTEM.Name,SMS_R_SYSTEM.SMSUniqueIdentifier,SMS_R_SYSTEM.ResourceDomainORWorkgroup,SMS_R_SYSTEM.Client from SMS_R_System where SMS_R_System.SMSUniqueIdentifier = "<INSERT x64 unknown GUID>"