Microsoft added some new text in the "known issues":
Due to reports that Exchange setup fails on servers running on several languages other than English, we have temporarily removed August SU from Microsoft / Windows update until we find the root cause of the problem. We recommend our customers running non-English servers to pause installation until we provide more information. If your server has been already impacted by failed setup, please do not try uninstalling anything. Re-enable Exchange Services by running the following from the \Exchange Server\V15\Bin folder. Reboot the server after this and services should start:
.\ServiceControl.ps1 AfterPatch
PS:Due to my currently running restore, i will test it afterwards 🙂