To recover Outlook password, you need an alternate email address. Now, go to account.live.com/acsr page and enter the email address for which you want to recover the password. Now, enter any other email ID other than your Outlook one. Enter the captcha code correctly in the next field, and click Next.
Check the alternate email address for a password reset email from Microsoft. Open that email and then get the code mentioned in it. Use this code to reset Outlook password and use your account like before.