Technical service toll-free number dial +1-844-832-5538.
Tips to Change your account password in Outlook.com.
Your Outlook.com and Microsoft account password are same.
Go to Microsoft Account Security and select Password Security.
As for security, you may be asked to verify your identity with a unique code. Decide if you want to receive the unique code by email or on phone number as SMS. You will be asked to verify your email address or the last four digits of your phone number, and then select Send code. When you receive the code, enter it and select Send.
Tip: If you can't get the code by email or phone, you may be able to enter a different email address from the one you are trying to retrieve. Go to Recover your Outlook account page and follow the process given below.
Enter your recent password, enter your new password, re-confirm your new password and then select Save.
If you are still not able to recover your Outlook password, contact technical service toll-free number: +1-844-832-5538.