speech doesn't't work on excel 2021 home version

[RMSB55]

Hi everyone.   

May someone help me in how to activate the speech facility on excel 2021?.

Version I have is for MAC

I have tried all what I found and always I get error 445. 

It works on word 2021 (same version) but not in excel.

Thanks in advance and best regards

[#2]

check for updates, verify permissions, enable speech features, try different speech engines, reinstall Office, check Excel's add-ins