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By default, Microsoft Office 365 will expire your password every 90 days. It can come as a bit of a shock when you email stops working for the first time after using the Office 365 service and you don’t know why.

This procedure will help you regain access to your account on your mobile device or desktop e-mail program if you’ve allowed your password to expire on your Office 365 account.

1. In an internet web browser, go to the Office 365 Portal at https://portal.microsoftonline.com/.
2. Attempt signing in to your account, using your existing (expired) password. You will see a message that your password has expired.
3. Follow the prompts to change your password.
4. Sign in to your Outlook Web App e-mail to make sure you are able to connect to your account with your new password.
5. On your mobile device and/or desktop e-mail application (using the e-mail settings for your Office 365 e-mail account) edit the password to match the one you created in the previous step.
6. Create a reminder to periodically update your Office 365 password.

Tip: Create a reminder to periodically update your password

To avoid any lapse in connectivity between your Office 365 account and e-mail programs, you should create a recurring appointment to remind you to periodically change the password on your Office 365 account (and update it on your mobile device or desktop e-mail application). The default password expiry duration may be changed by your Office 365 administrator. Consult your Office 365 IT Administrator if you want the default 90 day password expiry changed.