While logging in to office applications CAA90049 comes up. This used to be only fixable by changing a REG to turn modern Authentication off. (HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity:“EnableADAL”=dword:00000000) However this is not advisable since this will either be decrepiated or lower the security of the particular systems logins with M365. The cause of this can be that the […]