We recently dealt with an expiring certificate for a SubCA and the original offline RootCA was no longer available. We managed to create a new offline RootCA and use it to get the SubCA a new SubCA certificate. Since doing this, however, our SCCM hasn't been working properly. When looking at the list of Devices, all of them are shown as grey with an X; client activity shows as inactive and the last update was 7-10 days ago. Any help would be appreciated!