Wsus clients not updating or checking in with server

However for this lab I will choose to use and upstream WSUS server to download updates from.

To configure this WSUS server with the upstream server (WSUS from HQ) click the Start Connecting button.

Everything is great in your environment except the bandwidth between branch offices and the main office.

For this lab I have three sites, one main site (the HQ) and two branch offices (Branch1 and Branch2) which are connected trough a site-to-site VPN.

I presume you already have your WSUS server up and running in the main site, if not follow this guide then come back here to continue.

If you want everything to work smoothly the OU’s and the GPO’s need to be put in place.

On the first image you can see the computer groups created on the main site (the upstream WSUS server), and on the second one those groups were synchronized on the replica servers.

If you go to the main office WSUS, which is our upstream server, and click the Downstream Servers object, you can see all downstream WSUS servers and in which mode they are running.