Sign in with Microsoft
Sign in or create an account.
Select a different account.
You have multiple accounts
Choose the account you want to sign in with.

While you can't set a password for your entire Outlook program, you can set a password for an Outlook Data File (.pst). This password is required whenever you open the Outlook Data File (.pst).

Not every email account uses an Outlook Data File (.pst) to store your email, calendar, contact, and task information. Many types of email accounts, including Microsoft 365, Exchange accounts, accounts, and many POP and IMAP accounts use Offline Outlook Data Files (.ost) instead. You cannot set a password on an Offline Outlook Data File (.ost).

Note: The steps in this file will not help you reset your password with your email provider. If you forget your email account password, for example, your password, you'll need to contact your email provider for assistance. For more information about changing your email password in Outlook, see Change or update your email password.

Caution: If you set a password on your Outlook Data File (.pst) and forget the password, there is no way to retrieve the password.

  1. Click the File tab.

  2. Click Account Settings, and then click Account Settings.

    Account Settings command in the Baskstage view
    For Outlook 2007, On the File menu, click Data File Management.

  3. On the Data Files tab, click the Outlook Data File (.pst) for which you want to change the password, and then click Settings.

  4. Click Change Password. You will not see this option if you've selected an Offline Outlook Data File (.ost) file. The extension of the file is listed in the Location column of the Data Files tab. There is no way to set a password on an Offline Outlook Data File (.ost).

    Note: The Change Password button doesn’t appear if you are using an Offline Outlook Data File (.ost) file. Many email accounts, including Exchange, Microsoft 365, and accounts use Offline Outlook Data Files (.ost).

  5. In the Change Password dialog box, type the existing password in the Old password box. If there is no existing password, leave this box blank.

  6. In the New password and Verify password boxes, type the new password. The password can be up to 15 characters and is case-sensitive.

  7. Click OK to set the password.

    Important: If you forget your password, Microsoft can’t retrieve it. There is no password recovery option.

Security Note: For a better way to restrict access to your data, use a password-protected Windows user account for each person who uses the computer. For more information, see Windows Help and Support.

Top of Page

Need more help?

Want more options?

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Was this information helpful?

What affected your experience?
By pressing submit, your feedback will be used to improve Microsoft products and services. Your IT admin will be able to collect this data. Privacy Statement.

Thank you for your feedback!