a lots users reported at same network ( home or 4G) some times outlook can connected to exchange server since one month ago. some times can't . different time but in the same day the status is even different.
When there is issue , there is no login popup prompt.
open the OWA(outlook.office365.com) via IE , there will be error message about TLS expired or wrong TLS setting . via Edge , it will show me "login.microsoftonline.com" rejected the connection.
but ping to outlook.office365.com is good , and the pc can access to internet.
And when the user bring the computer to office network , all working !
i had did some check with TLS1.0 1.1 1.2 setting ; restart outlook , computer all failed.
we are using MS365 MSO(16.0.13127.21210) 32bit
OS: Win 10 enterprise
could anyone can help ?