I have ePO v4 and I created a couple new repo's for updates. When I check the repo's on the clients, I see the ones I created and they are enabled however when you click to do an update, it does not check the new repo's.... any idea why?
Have you edited the ePO Agent Policy to assign the groups to selected repositories? If not, you need to do so. When we first rolled out ePO, some 6 years ago, we neglected to do that and everyday at 12 noon our whole network came to a screaming halt as 10K workstations tried to hit the ePO server to download the dat. Of course, I didn't work on ePO then. =).
Now we have roughly 60 repositories for 15K workstations. I have a seperate policy for each Site with the two repositories that are closest selected for them.