SOLVED: Issues with Remote Desktop, Remote Control and Software installation.
Remote Desktop, Remote Control, Software installation are not possible at the moment with SCCM.
It is currently not possible to control a computer remotely with Remote Desktop or to deploy software on managed computers.
Remote Desktop, Remote Control, Software installations depend on information in SCCM, the functions are (temporarily) no longer available.
Today at 16:00, all computers on site, which have not yet been provided with a MAC address, will be switched on to readd them to the inventory. It is expected that this will solve the problems on Monday.
The recently performed recovery action has ensured that most of the computers are available again in the SCCM database. The remaining computers eventually are automatically registered again.