Your question is very unclear. What credentials? The only credentials EW needs are your FTP username and password when you want to access the remote site for publishing. That has nothing to do with WIndows 10, since it's the remote server
that needs to recognize those credentials. Please clarify your problem. If you mean you have forgotten your PC password, or someone has changed it on you, that has nothing to do with this forum (and no stranger could tell you what it is).