Hi,

I am running Windows 8 Enterprise Edition with Outlook 2013 64 Edition on my laptop.  I have set up my Digital ID and configured my laptop so I can send / sign / receive S/MIME Encrypted Emails.  

When I attempt to open an Encrypted email I get the following error message -

Sorry we're having trouble opening this item.  This could be temporary, but if you see it again you might want to restart outlook.  Your Digital ID name cannot be found by the underlying security system.

When I sign an email, I dont have any problems when I hit send on the email and I can send an encrypted email to a recipient without any issues.

I have tried everything I can think of but I dont seem to be able to get Outlook to open the encrypted emails, for example

1. Recreated the outlook profile and cleared my OST files
2. Deleted the certificates and reimported them using certmgr.msc, internet explorer and Outlook 2013 import Digital Function.
3. Removed Office 2013 off the laptop and completely re installed the applications
4. Ran Office 2013 Repair (Via Add and Remove Programs)
5. Tried an new ID from our corporate CAs
6. Updated the laptop via Windows update so all current patches / fixes for Office and Windows 8 are installed on the laptop.

When I used the certificates on my Windows 7 laptop using Office 2013 I dont have any problems with encrypted emails and I can open / send mails using the same S/MIME Certificates.

The hotfix -

KB Article Number(s): 2813237 
Is already installed on the laptop

Anyone go any further suggestions?