If the below guide is confusing to you then the simplest option for you is to use Office C2R Installer.
Retail Office (O365 with Mondo 2016 KMS License installed by
Activation script):
Pros - Latest feature updates
Cons - On Office repair or Windows major feature updates, you will need
to run activation script again.
Volume Office (2021):
Pros - You won’t need to run activation script again on Office repair or
Windows major feature updates.
Cons - No latest feature updates
Please note that in the official C2R office custom installation method, there is no ISO or any one-click solution available. Below is the simplest guide to installing the customized office.
First clear previous installation of Office,
Uninstall the office with App and Features option in Windows settings.
Run OfficeScrubber.cmd file from Office
Scrubber by abbodi1406 and select
[R] Remove all Licenses option. You can skip this step if
Office was never installed on the system.
Once done,
Download Office Deployment Tool (ODT)
Copy the downloaded setup.exe file to the root of
the C drive, i.e. C:\setup.exe
Goto config.office.com
If you want Retail Office then select
Microsoft 365 Apps for enterprise in the office suites
section.
If you want Volume Office then select
Office LTSC Professional Plus 2021 - Volume License (Don’t
select SPLA version) in the office suites section.
You can add Visio and Project apps if you need them. Don’t select language which is not available for Project/Visio if you are installing these apps.
Customize other things and leave them as default where you don’t understand something.
Once you go through all the options, click on the export button
and it will download a file named
Configuration.xml
Copy the downloaded Configuration.xml file to the
root of the C drive, i.e. C:\Configuration.xml
Open the command prompt as admin and run the below commands
cd /d C:\
setup.exe /configure Configuration.xmlIt will now download and install Office. You can activate it with your preferred method.