Yesterday, a colleague using Mac OS told me that the email was suddenly out of the question, not all Mac OS users, OS versions from 10.9 to 10.13, most of the problematic Mac office is version 2011, There are a number of attempts to find the 12 version and the following upgrade to 2016 office issues resolved, but for the 10.13 version of Mac OS users after upgrading to Office 2016, Outlook and OS compatibility issues cannot be opened prompt, Outlook program icons are also added to the forbidden open pattern, thinking that the system downgrade is not very good, from the office point of view, really is 2016 can not run on the 10.13 version, and constantly go to find the answer,
finally found only office 2016 versions 15.35 and later can only work in high Sierra and decisively will be a 10.12 OS version of Office 2016 upgrade from version online to 16.13 version, the test found that Outlook can work, but the other two 10.13 version of the OS can't upgrade Office Online, to Microsoft download found that the latest version is 15.37 version, after downloading the installation can be, the mail is back to normal
MAC OS and Office version issues