Digital ID cannot be found.

[Niklas]

Cannot open some email. The message I get is "Cannot open this item. Your
digital ID cannot be found by the underlyng security system". Help!

 

[Lance]

You can try this.

http://support.microsoft.com/kb/q258527/

But it may not help. I know I am running into this problem and the
suggestions that they had haven't helped me at all.

 

[Vizvary Istvan III]

You might want to use p7mViewer to check the problem, as described in

http://www.cryptigo.com/p7mViewer/FAQ/#faq69