So, if they are differentįrom each other and you have never changed the SIP address, you can try reverting the username back to be the same as the SIP address. By default, the SIP address is generated automatically while setting up the user in Office 365. Re-confirm whether the SIP address of your Office 365 Skype for Business for mac account is the same as its signing address (username).
(For example, if the issue persists in your Office, you can test it in your home)ģ.
Change another network environment where the network is performance is stable and high-speed. Generally, the mac firewall settings can be found in “Apple Menu”> “System Preference”> “Security and Privacy”> “Firewall”.Ģ. Temporarily disable your Mac’s firewall or anti-virus program.
Please try the following methods to give it a shot:ġ.
