SOLVED Unknown Computer issue duplicate All Unknown Computers collection

[simon hutton WG]

I have recently installed SCCM 1606 and i'm having issues with deploying a OSD to new machines. I have Unknown device support enabled but when PXE booting i get the AbortPXE message. When looking at the SMSPXE.log file i can see that it doesn't think there is an advertisement available. After a bit more digging i have found that i have 2 x64 Unknown Computer (x64 Unknown Computer) and 2 x86 Unknown Computer (x86 Unknown Computer). However my All Unknown Computers collection only shows 1 for each, these have the deployments available to them. My question is how do i get rid of the duplicates and get the correct ones showing in the All Unknown Computers collection? Screen shots attached.
All Unknown.jpg shows the Device Collection containing the 2 "Devices"
Deployments.jpg shows the items deployed to x64 Unknown Computer "Device" which shows in the Collection
No Deployments.jpg shows that the duplicate X64 Unknown Computer "Device" doesn't have any deployments (i'm also not able to add any to this one)
Unknown devices.jpg shows that i have 4 entries for unknown devices.

I hope the above makes sense and i look forward to hearing back.

 

[Prajwal Desai]

Bit surprised to see you have duplicate All Unknown Computers collection. I am not sure how you got that but go through the below post and see if that helps.

http://myitforum.com/myitforumwp/20...known-computers-after-configmgr-2012-restore/