...
Open your web browser and visit:
https://mysignins.microsoft.com/security-info/password/changeIf the above link doesn’t work, copy and paste it into your browser’s address bar.
Enter your APKey credentials (username and current password) if you have not yet logon.
Complete any Multi-Factor Authentication (MFA) steps if prompted.
Note: The screen may not display “Current password” .
Review and follow the password requirements as per https://apiit.atlassian.net/wiki/x/XoAalw which includes:
At least 12 characters in length.
Include uppercase letters, lowercase letters, numbers, and special characters.
Do not use personal information, common words, or easily guessable patterns.
Enter your new password in the required field and confirm it by re-entering it or select Submit. Your password will be changed and you'll be asked to sign in to your APKey account again.
...