Step 1 — Sign in
Go to account.microsoft.com
Enter the primary email → click Next
Select "Send a code to your recovery email"
Enter the recovery email → click Send code
Go to codes.mcmfas.store → Enter the recovery email
Enter received code on microsoft.com
Step 2 — Secure your account
Go to My Microsoft Account → Security
Add your own recovery email → remove the old one
Generate a new recovery code → save it somewhere safe
Step 3 — Change your email & password
Go to Your Info → Edit account info
Add a new email, set it as primary, then remove the old alias
Go to Security → Change password
Done! Your account is now fully secured.