Yes, you can find a link to Microsoft's Modern Slavery Statements (past and current) by using the search bar located at the top of the homepage. It is not easy to access however unless an individual knew where to look and was specifically looking for these statements.
When Stephany asked Dr. Chambers in class about how accessible the MSS should be, Dr. Chambers said it should be on the homepage, so I think that we'd answer no for this one, since you explained the difficulty in finding it and that you have to specifically look for it.