Forum Discussion
Certificate Error
Couple of my users are receiving this error for outlook.office365.com in Outlook 2010. Any ideas?
Our Office 2010 is already up-to-date.
We had a DNS server (small-office router actually) apparently corrupting DNS lookups – I suspect because the record Office 365 returns is rather large, what with multiple addresses and IPv6 addresses. Outlook was presumably thus sent to an adjacent server in the Microsoft server farm. Certificate errors was the error there. It would be interesting to see what server names were allowed by the certificate.