Decrypting Emails After Obtaining a New CAC

If you obtained a new CAC you may encounter issues reading content that was encrypted or signed by your old CAC.

  1. Browse to
  2. On the left click ‘End Users’
  3. If you are prompted to select a certificate select your Government ID and not your Email certificate and enter your PIN.
  4. Open the selection “Windows: Recovering and Installing an Old Encryption Key” and download the pdf instructions.

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