Where are you trying to sign in? Are you setting up your computer out of box? Or are you trying to sign in via Settings > Accounts > Your info? Or on a certain app, or a certain URL? Please provide that detail as it matters.
What type of email address are you using for your Microsoft account, outlook.com, gmail.com, or a custom domain address, or is it actually a work/school email address assigned to you by your organization?
Please provide as much info as possible in order to troubleshoot this.