Hi @Alex
You may go to Windows Settings > Apps > Installed Apps, make sure there is no Office other than Office 2019 installed on your PC.
- If there is a program related to Microsoft 365 apps, it is recommended to uninstall it.
I also suggest you run command to check the installed Office information.
- 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 copy the command result and paste back.