When installing or upgrading Microsoft Office 2016 on a system where a prior version of Microsoft Office was installed, the installation fails with "Microsoft Office 2016 encountered an error during setup." The installation rolls back.
The cause is related to the Microsoft Help folder being left behind by the removal of the prior version of Office.
Locate the following folder C:\ProgramData\Microsoft Help. Rename "Microsoft Help" to "Microsoft Help.old" Restart the computer and reattempt the installation of Microsoft Office.
Microsoft Office 2016 Standard and Professional Plus on Windows Sevrer 2016, 2019, Citrix Virtual Apps and Desktops 7.