Find below in this post, a series of steps to you with fixing “the specified user does not have a valid profile” when opening apps such as Nvidia Experience or MSI Dragon Center etc.

  1. Check if you are Administrator
  2. If you are Administrator check if you only have an online account signed in.
  3. Go to settings->Email & Accounts
  4. Click on add an account
  5. If that did not work then go to settings->Your Info
  6. Then click on Sign in with a local account instead

Once you are logged into your new account(local) the errors should be resolved. Hope that this has helped!