Set-CalendarProcessing -Identity RAUMNAME -DeleteSubject $False -AddOrganizerToSubject $False -DeleteComments $false
oder
Set-CalendarProcessing -Identity RaumName -AddOrganizerToSubject $true -DeleteComments $false -DeleteSubject $false
Update-OfflineAddressBook -Identity "Standard-Offlineadressbuch"
Windowstaste + X -> Ausführen -> slui.exe 4
REG ADD "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\NetCache" /v FormatDatabase /t REG_DWORD /d 1 /f
Allgemein -> Bedienungshilfen -> Bewegung reduzieren
Internet Explorer -> Extras -> Internetoptionen -> Sicherheit -> Lokales Intranet -> Sites -> Site hinzufügen