Author Topic: Encryption fails as recipient has invalid,conflicting or unsupported...  (Read 22170 times)

Offline LAPAZ

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My wife and I both run Outlook 2003, under Vista 32bit,  and have successfully installed email certificates.  Both can send certified emails.  Each has saved the other's contact details.  When I try to send an encrypted email to her, I get the following error message:

"Microsoft Office Outlook had problems encrypting this message because the following recipients had missing or invalid certificates, or conflicting or unsupported encryption capabilitues"

Does anybody know how I resolve this?

Many thanks

Offline exodus82

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Re: Encryption fails as recipient has invalid,conflicting or unsupported...
« Reply #1 on: October 13, 2010, 03:44:05 PM »
I have also same problem with Office Outlook 2007. I have my own certificate and a friend of mine's certificate too. When I am composing the email I click the Signature and Encrypt Button then the Send button and I get the same dialog ""Microsoft Office Outlook had problems encrypting this message because the following recipients had missing or invalid certificates, or conflicting or unsupported encryption capabilities" with a button saying to send it unencrypted.

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Offline LAPAZ

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Re: Encryption fails as recipient has invalid,conflicting or unsupported...
« Reply #2 on: October 17, 2010, 09:50:31 AM »
Comodo are looking into the issue for me via a support ticket.  This is the latest solution offered.  It has not solved the problem in my case, but it may be of use to others with different setups

Quote:

This error is not associated with the certificate itself, you need to check the settings in outlook as suggested in the technet article.

http://social.technet.microsoft.com/Forums/en-US/winserversecurity/thread/9ad86e6c-5f9f-4d84-9fdd-930929c8e91f

Unquote

 

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