How to Use a PFX File

A PFX file is one of two file types: a "PKCS #12 Certificate File" or t a PFX text file created with a text editing program. A PFX certificate file is an encrypted security certificate file that is saved to the hard drive and stores authenticity information from a specific web site. For example, your banking institution installs certain security certificates on your computer for you to sign into its Web application. If the file is a security certificate, the certificate may be installed using the Microsoft Certificate Manager.

Instructions

  1. Install PFX Security Certificate

    • 1

      Right-click on the PFX security certificate file to show the context menu.

    • 2

      Click the "Install" option on the context menu. The PFX certificate is installed using the Microsoft Certificate Manager. A confirmation message appears.

    • 3

      Click "OK." The PFX certificate is installed.

    Open PFX Text File

    • 4

      Right-click on the PFX file to show the context menu.

    • 5

      Click the "Open With" option.

    • 6

      Click the "Notepad" application from the list of available programs. The PFX file opens in Notepad.

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