I am working on a very large network. There are around 300 computers. I am not sure about the other branches there will be more. Now the problem lies with WSUS. There are some set of updates which are shown in the list. I approved all of them. But still those clients are not receiving any updates. It is a bit annoying and somehow I am not able to figure out the cause behind the same. I tried to resync windows a number of time and also tried to re-manage the update server but that also did not worked.