Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Dear respected,
Good day! Welcome to Microsoft Community.
We went through your post carefully and we would like to confirm if you are referring to the Use voice recognition in Windows - Microsoft Support or Dictate in Microsoft 365 - Microsoft Support
If the voice dictation is also not working in non-Office apps, then we suggest you post a new thread under Windows category to get the professional support. For reference: "No audio device available" Lenovo laptop should have built in. - Microsoft Community
If only the Office apps can't run the dictate function, may I know what the exact behavior of the issue in Office apps is like if it shows any error message like Dictation can't hear you. For reference: If dictation in Office isn't working - Microsoft Support
Appreciate your understanding that sometimes the initial reply may not resolve the situation very soon. However, we can work together to narrow down and resolve the situation. Please kindly post back and provide the more information, then we can focus on your specific scenario and provide specific suggestions.
We'll be here for you if there have anything else we can do for you. I appreciate your time and effort on checking these above and thank you for your patience and cooperation. I hope that you are keeping safe and well!
Sincerely,
Mia | Microsoft Community Moderator