To link your local user profile on a Windows 8.1 computer to a Microsoft account, you can follow these general steps: 1. Sign in with a Microsoft Account: - Ensure you are signed in to your Windows 8.1 computer with your Microsoft account. - If not, go to "Settings" > "Accounts" > "Your account" and select "Sign in with a Microsoft account instead." 2. Switch the Local Account to a Microsoft Account: - Go to "Settings" > "Accounts" > "Your account." - Under your local account name, you should see an option like "Sign in with a Microsoft account instead." - Follow the on-screen instructions to link your local account to your Microsoft account. 3. Change User Name: - You can't directly change the username of a local...