In this article, I will discuss the error I encountered during the installation of "Microsoft Office 2016" with the error message: Microsoft Office Professional Plus 2016 encountered an error during setup..

1) First and foremost, recommend using only genuine Microsoft Office installers to avoid additional issues with pirated builds that may arise during installation or while using the application.

You can download original MSDN installers of Microsoft Office from our catalog, where checksums of the installers are provided in the description.

2) Registry Cleanup:

Press the Win + R hotkeys => Enter the command regedit in the Run dialog and click "OK".
Delete the following registry branches:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office and delete folders 14.0, 15.0, and 16.0 if they exist in this branch.

Also, delete the branch: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\Microsoft\Office
3) Folder Deletion and Renaming:

Additionally, recommend removing the following folders:

C:\Windows\System32\Tasks\Microsoft\Office
Recommend renaming the folder:

Navigate to C:\ProgramData (if you don't see this folder, disable hiding folders)

And rename the "Microsoft Help" folder to any other name, for example, "Microsoft Help.old".

4) Removal of MS Office remnants using the Microsoft utility - Microsoft Support and Recovery Assistant. Download and instructions for use are available in our previous article.

5) If all the above recommendations didn't help, I suggest temporarily disabling the firewall and uninstalling (not just disabling) the antivirus during installation, as the installation error may be caused by it blocking installation processes.