I made it work by allowing all Microsoft IPs based on this csv: https://www.microsoft.com/en-us/download/details.aspx?id=53602
One problem solved - new problem created by activating web proxy / filter.
I have exact the same problem now as it is written here: https://forum.opnsense.org/index.php?topic=6648.0 but since May 2018 no solution.
One problem solved - new problem created by activating web proxy / filter.
I have exact the same problem now as it is written here: https://forum.opnsense.org/index.php?topic=6648.0 but since May 2018 no solution.