MF
MFLEX IT Services
Customer focused / engineering driven
Password Management and Security Guide
Updated May 1, 2026

Company user guide

Manage Your MFLEX Microsoft 365 Password Safely

Use this guide to unlock your account, reset a forgotten password, change a known password, sync a remote Windows laptop, and follow MFLEX password security requirements.

I forgot my password or I am locked out Use Microsoft self-service password reset to verify your identity and regain access. I know my password and want to change it Change your MFLEX password from the Microsoft My Account or My Sign-ins portal. I want to avoid future sign-in issues Use a strong passphrase, keep MFA methods updated, and sync saved passwords.

Start Here

Choose the correct path based on whether you know your current password.

Proactive security: MFLEX passwords expire every 90 days. Change your password early to avoid service interruptions.
Locked out

Forgot password or cannot sign in

Use the Microsoft password reset portal to reset your password or unlock your account after verifying your identity.

Known password

Change password

If you know your current password, change it from the Microsoft My Account or My Sign-ins portal.

After change

Update connected apps

Restart Outlook, Teams, VPN, mobile apps, and browsers that may have your old password saved.

Reset Password / Unlock Account Change Password Manage Security Info

Forgot Password or Locked Out

Use Microsoft Entra self-service password reset to unlock or reset your MFLEX account.

  1. Open the password reset portal.

    Go to passwordreset.microsoftonline.com from a computer or mobile browser.

  2. Enter your MFLEX work email address.

    Enter your full company email address, complete the characters shown on screen, then select Next.

  3. Choose the correct option.

    Select "I forgot my password" to reset your password, or "I know my password, but can't sign in" to unlock your account.

  4. Verify your identity.

    Follow the prompts using your registered MFA methods, such as Microsoft Authenticator, phone call, or text message.

  5. Complete the reset or unlock.

    If you reset your password, sign in again with the new password and update apps or saved credentials that still use the old password.

Change a Known Password

Use this method when you can still sign in with your current password.

Recommended for all users: The web portal works for Windows, Mac, and remote users.

Standard web method

  2. Sign in with your current credentials.

    Complete MFA if prompted.

  3. Enter the old and new password.

    Type your current password, then enter and confirm the new password.

  4. Submit and sign in again.

    After the change completes, restart Microsoft 365 apps and sign in with the new password.

Windows PC in office or on VPN

  1. Press Ctrl + Alt + Del.

    Use the keyboard command while signed in to Windows.

  2. Select Change a password.

    Enter your old password, then enter and confirm the new password.

  3. Allow time for sync.

    Password changes may take a few minutes to sync across Microsoft 365, VPN, and other MFLEX systems.

Password Policy

Use a password that meets MFLEX complexity and history requirements.

Requirement MFLEX guideline
Minimum length Use at least 8 characters. Longer passphrases are strongly recommended.
Personal information Do not include your name, username, or email prefix.
Password history Do not reuse any of your last 10 passwords.
Account lockout Your account may lock automatically after 5 failed sign-in attempts.
Complexity Use characters from at least three categories: uppercase letters, lowercase letters, numbers, and special characters such as ! @ # $ % ^ & *.

Remote Windows Password Sync

If you change your password online while remote, your Windows laptop may still know the old password until it syncs.

  1. Sign in to Windows using the old password.

    If you changed the password from the web portal, your laptop may not have received the new password yet.

  2. Connect to VPN.

    Connect to the MFLEX VPN so your laptop can reach company authentication services.

  3. Lock the computer.

    Press Win + L to lock your screen.

  4. Unlock using the new password.

    This helps Windows cache the new password for future sign-ins.

macOS Local Password

Changing your Mac login password is separate from changing your MFLEX network and Microsoft 365 password.

Important: Use the standard web method to change your MFLEX network and email password. The steps below only change your local Mac login password.
  1. Open System Settings.

    Choose Apple menu, then System Settings.

  2. Open Users and Groups.

    Select Users and Groups from the sidebar. You may need to scroll.

  3. Select your user account.

    Click the information button next to your user name, then choose Change.

  4. Change the local password.

    Enter the old password, enter and verify the new password, add a hint if needed, then select Change Password.

Security Best Practices

Small habits prevent lockouts and reduce the risk of compromised accounts.

Create a strong password

  • Use a long passphrase that is easier to remember and harder to guess.
  • Avoid common patterns such as Password123! or Summer2024!
  • Do not reuse your MFLEX password on personal websites.
  • Never share your password by email, chat, text message, or unsecured channels.

Examples: Coffee!Brewing#Morning4U TreeH0use!Summer#42

Protect access after the change

  • Use an approved password manager if permitted by MFLEX policy.
  • Keep Microsoft Authenticator and at least one backup MFA method registered.
  • Review your sign-in activity regularly for suspicious access.
  • Change your password immediately if you suspect it was exposed.
Review Security Info

Frequently Asked Questions

Common password and sign-in issues after a password change.

Outlook or Teams keeps asking for my password.

Restart the application. When prompted, enter your new password and choose the option to remember your credentials if it is available.

Why is my new password being rejected?

Confirm it meets MFLEX complexity requirements, does not include your name or email prefix, and is not one of your last 10 passwords. If the error continues, try clearing your browser cache or using a private browser window.

Do I need to update my mobile phone?

Yes. Outlook, Teams, and other mobile apps may stop syncing until you sign in again with the new password.

My account is locked. What should I do?

Use the password reset portal and choose the unlock option. If you cannot verify your identity or the unlock does not work, contact the MFLEX IT Helpdesk.

I changed my password while remote and Windows still wants the old password.

Sign in with the old password, connect to VPN, press Win + L to lock the screen, then unlock with the new password so the laptop can cache the new credentials.

Still Need Help?

Contact MFLEX IT if you cannot reset, unlock, or sync your password.

MFLEX IT Helpdesk USA

  • Phone: +1 (949) 453-6855
  • Use the MFLEX IT Helpdesk scheduling link if available on the company portal.
  • Include your full name, MFLEX email address, phone number, and a short description of the issue.

Before contacting IT

  • Confirm you are using your full MFLEX email address.
  • Try the password reset portal from a private browser window.
  • Have your registered MFA method available for identity verification.
  • Do not send your password to IT or anyone else.