The school is still using Office 2019 LTSC so I am rolling out Office 2024 LTSC but some users still need Publisher. For those users I have installed 2021 LTSC. I have installed the 2024 KMS key and those using Office 2024 activate fine but those
using Office 2021 do not activate. I have tried ospp.vbs /act but the command errors saying no KMS service can be found.
I thought using the KMS key for latest version of office would activate earlier versions like Windows does. Do I need to install the KMS key for each version of office?
Thanks.
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