Error: Could not find the encrypted attachment for this message

When troubleshooting the Outlook Add-in it is good to note any error messages. The error "Could not find the encrypted attachment for this message" occurs when attempting to use a version of the Outlook Add-in that is no longer supported. You can find more about the Protected Trust Outlook Add-in versions here.

Hint: Remember you can always go to https://app.protectedtrust.com and sign in to the web app to view protected messages in your Inbox or Compose and Send a protected message.

Steps to resolve the Outlook Add-in error "Could not find the encrypted attachment for this message"

  1. If you receive the error, "Could not find the encrypted attachment for this message", close Outlook
  2. Uninstall the Outlook Add-in, see How to uninstall
  3. Install the latest version of Send It Secure for Windows (which includes the Outlook Add-in), see Integrate with Outlook for Windows