Windows 10: Does built-in Microsoft David free to use for commercial purposes?

I'm a content creator on Youtube and wanted to use text to speech software and Microsoft David voice for commercial purposes. If I can, do I need specific licenses?

:)

 

Is it legal to use Window 10 Home for Commercial Purpose / Office?

Is it legal to use Window 10 Home for Commercial Purpose / Office?

Will it be consider a software infringement to use Window 10 Home for commercial purpose?

or Window 10 Pro should be used for commercial purpose / office?

 

Using bahnschrift font for commercial purpose

Please let me know whether we can use bahnschrift font for commercial purpose for free. I came to know the the font is associated with microsoft, if so do i need a licence to use it commercially? Also please mention how can i buy the licence, for same
font if i need it.

 

Can I use SAPI 5.1 David+Zira Voices for commercial purposes such as distributing audiobook WAV files with my own mix of unique words?

Can I use SAPI 5.1 David+Zira Voices for commercial purposes such as distributing audio book WAV files with my own mix of unique words?

I have use SAPI 5.1 to create political document audio books in WAV format (The U.S. Constitution, The Bill Of Rights), and word focused meditations WAV files.

Can any of these files be used for commercial purposes or distributed publicly?

I have links to these audio books and meditations if you need to hear them.

I can provide the links upon request.

Thank you for any help.

(8O)