Hallo,
auf unserem SBS wurde die WSUS Rolle deinstalliert, da wir Platzprobleme mit der Festplatte hatten. Der Server wurde aufgerüstet es ist genügend Platz und des WSUS sollte wieder installiert werden.
Dies ist nicht möglich.

Ich habe alle Anleitungen im Netz probiert nix.
Bekomme immer den gleichen Fehler.
2017-09-01 11:00:55 Success MWUSSetup Validating pre-requisites...
2017-09-01 11:00:55 Error MWUSSetup Failed to determine if an higher version of WSUS is installed. Assuming it is not... (Error 0x80070002: Das System kann die angegebene Datei nicht finden.)
2017-09-01 11:00:55 Error MWUSSetup WSUS is outdated. But this will not block setup (Error 0x00000000: Der Vorgang wurde erfolgreich beendet.)
2017-09-01 11:00:55 Success MWUSSetup Initializing installation details
2017-09-01 11:00:55 Success MWUSSetup Skipping Asp.Net install since not running on win2k3...
2017-09-01 11:00:55 Success MWUSSetup Installing wYukon using ocsetup
2017-09-01 11:00:55 Success MWUSSetup Windows Internal database is already installed on this machine
2017-09-01 11:00:55 Success MWUSSetup Installing WSUS...
2017-09-01 11:00:56 Success CustomActions.Dll Unable to get INSTALL_LANGUAGE property, calculating it...
2017-09-01 11:00:56 Success CustomActions.Dll Successfully set propery of WSUS admin groups' full names
2017-09-01 11:00:56 Success CustomActions.Dll .Net framework path: C:\Windows\Microsoft.NET\Framework64\v4.7.2053
2017-09-01 11:00:57 Success CustomActions.Dll Creating user group: WSUS-Berichterstatter with Description: WSUS-Administratoren, die nur Berichte auf dem Windows Server Update Services-Server ausführen können.
2017-09-01 11:00:57 Success CustomActions.Dll Creating WSUS-Berichterstatter user group
2017-09-01 11:00:57 Success CustomActions.Dll WSUS-Berichterstatter user group already exists
2017-09-01 11:00:57 Success CustomActions.Dll Successfully created WSUS-Berichterstatter user group
2017-09-01 11:00:57 Success CustomActions.Dll Creating user group: WSUS-Administratoren with Description: WSUS-Administratoren können den Windows Server Update Services-Server verwalten.
2017-09-01 11:00:57 Success CustomActions.Dll Creating WSUS-Administratoren user group
2017-09-01 11:00:57 Success CustomActions.Dll WSUS-Administratoren user group already exists
2017-09-01 11:00:57 Success CustomActions.Dll Successfully created WSUS-Administratoren user group
2017-09-01 11:00:57 Success CustomActions.Dll Successfully created WSUS user groups
2017-09-01 11:00:57 Success CustomActions.Dll Succesfully set binary SID property
2017-09-01 11:00:57 Success CustomActions.Dll Succesfully set binary SID property
2017-09-01 11:00:57 Success CustomActions.Dll Successfully set binary SID properties
2017-09-01 11:02:25 Error MWUSSetup InstallWsus: MWUS Installation Failed (Error 0x80070643: Schwerwiegender Fehler bei der Installation.)
2017-09-01 11:02:25 Error MWUSSetup CInstallDriver:

erformSetup: WSUS installation failed (Error 0x80070643: Schwerwiegender Fehler bei der Installation.)
2017-09-01 11:02:25 Error MWUSSetup CSetupDriver::LaunchSetup: Setup failed (Error 0x80070643: Schwerwiegender Fehler bei der Installation.)
2017-09-01 11:02:25 Success MWUSSetup An error occurred while performing setup. Please refer to the error logs for details
2017-09-01 11:02:25 Error MWUSSetup DoInstall: Wsus setup failed (Error 0x80070643: Schwerwiegender Fehler bei der Installation.)
Was kann ich noch tun?