June month updates has been released by Microsoft. Did you guys faced any issues with Windows 10 KB5003637? If yes, you are in right page.
Now microsoft is releasing windows SSUs and Latest cumulative updates together with one cumulative update
June month cumulative update KB5003637 has a prerequisite update,that is May 2021 cumulative update KB5003173. You must install KB5003173 before installing the latest CU
Suppose if you have selected immediately expire a superseded software update in SUP, KB5003173 will be removed from sccm. So if those machines which is not installed with may update will have challanges in installing June LCU
If any challenges with June LCU ,install may month KB5003173 first. Else try to push standalone ssu required for June LCU