Hi,
>>In Remote site WSUS console, it sees some remote site PCs under "unassigned", does not see any main site PCs or Servers,
The replica server is only able to see the clients which use it as the update source. It's normal. The main server is able to see all of the clients because the replica server roll up the information.
If WSUS can't find the group reported by a specific client, this client will be put into the unassigned group.
First, we should check the result of the group policy on the clients having this issue.:
- gpupdate /force
- gpresult /h C:\report.html
Please make sure that the group name in the report is exactly same with the group name on WSUS.
Also, please check the windowsupdate.log of the clients with this issue. It may give some hints.
Best Regards.
Steven Lee Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact tnmff@microsoft.com.