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Import a PKCS 12 certificate for Outlook Express

If you have a PKCS 12 file (.pfx or .p12 extension) containing a certificate and if you want to use it with Outlook Express, you will have to import it first.

To do so, use Internet Explorer:

  • Go to Tools / Options / Content / Certificates
  • In the Personal tab, click Import
  • A wizard opens
  • Select the file you want to import
  • Enter the password
  • Select Enable strong private key protection
  • And tick the case: Mark this key as exportable
  • Tick the default storage selection box.
Your certificate has been imported. If the PKCS 12 file contains a certification chain, it has been imported as well.

You can now finalize your software configuration, Signature / encryption with Outlook Express 5.5+