I struggled with this for days.  You need to roll Office back to the mid December release. To do that open Excel and Go to File/Account/ Turn off Excel updates.  Mark your calendar to turn it back on in a month or so.  Close Excel. Open a Command Prompt as Admin (Terminal and PowerShell do not work). Paste the following:

"C:\Program Files\Common Files\microsoft shared\ClickToRun\officec2rclient.exe" /update user updatetoversion=16.0.15831.20208

Worked on 7 workstations for me.