The longest thread so far - which harked back to early July, just a day after Microsoft shipped the final Office 2016 for Mac and Apple issued the first public beta of El Capitan - had logged nearly 48,000 views and contained more than 525 messages as of late Tuesday, both extremely large numbers for the forum. Since then, numerous threads have been produced by users looking for an explanation and a fix. Microsoft has been taking a beating on its Office 2016 for Mac support discussion forum since Sept.