Windows 10 1607 - No WSUS Updates

Hi,

We try to update a single fresh installed Windows 10 Pro 1607 (no domain member) using our WSUS-Server (Server 2016). But there seem to be some problems:

- The client is shown in WSUS console, but all updates (the 1607 Cummulatives too) are not applicable.

- The Clients update log shows the following error 0x80072efd and one info "0 Updates found"

- After Reboot the client shows one time (under updates) that the client is up-to-date and there are no updates availiable.

How we can solve this?

We tried already removing SoftwareDistribution folder, multiple restarts and adding the selfsigned certificate to the client.