
Have other Microsoft Office products been installed on this machine before?
Currently, I suggest you run the commands to check the Office activation information first.
Search "CMD", right-click the Command Prompt and run as administrator. Then copy and paste the command below in it, click Enter at last:
cscript.exe "%ProgramFiles%\Microsoft Office\Office16\ospp.vbs" /dstatus
(If you are running 32-bit Office on a 64-bit operating system)
cscript.exe "%ProgramFiles(x86)%\Microsoft Office\Office16\ospp.vbs" /dstatus
Then please take a screenshot and post here. I would check whether there is any other Office products affect your volume licensed Office 2019.
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