How to find an older version of Microsoft Office 365 for MacBook 10.11.6
You can find previous installers at

https://docs.microsoft.com/en-us/officeupdates/update-history-office-for-mac

If you go to that page, look for the installer for "16.15 (18070902)" and use that.

In case the page changes or doesn't exist in the future, here are the current links:

Release Notes:

https://docs.microsoft.com/en-us/officeupdates/release-notes-office-for-mac#july-2018-release

Installer Package

https://officecdn.microsoft.com/pr/C1297A47-86C4-4C1F-97FA-950631F94777/OfficeMac/Microsoft_Office_2016_16.15.18070902_Installer.pkg

Verification Information

Size:

1797089465 bytes (1.79 GB)


md5 -r Microsoft_Office_2016_16.15.18070902_Installer.pkg

e580d202dca712c268c288b36576a89a Microsoft_Office_2016_16.15.18070902_Installer.pkg


shasum -a 256 -p Microsoft_Office_2016_16.15.18070902_Installer.pkg

2caa050dcc2a95f90f57449f9ab5b173437fa2580f282f4c1513a83918e49ffa ?Microsoft_Office_2016_16.15.18070902_Installer.pkg