These emails contain sensitive information and need to be encrypted. I'm working on a project that requires me to send a mail merge email out to ~1.5k users.
I am concerned that my PC may be suffering a relapse.Would be super grateful if anyone could help offer a solution, as I feel like I've done all the troubleshooting and research imaginable and can't figure it out. I again get the No Certificate Available error message.Īny idea how to get Outlook back to working with my certificates?īTW: I set up my email accounts with certificates and encryption because my wife and I were having a major problem cyber attacks on our PCs and with MITM attacks on our email.
If I click the Change Settings button and then click on the button to choose a Signing Certificate then I get an error message statiing No Certificates Available.Īt File/Options/TrustCenter/Trust Center Settings/Email Security when I click on Import/Export Digital Certificates and attempt to Export your Digital ID to a file by clickiong on Select. If I attempt to change the security setting from Automatic to one of the account- specific S/Mime Settings the Invalid Certificate message immediately pops up again.
When I click on Automatic I can see all three mail accounts listed in the form My S/Mime When I click on Change Security Settings button I see that Add digital signature is checked (as it should be).
Two days ago I started getting an Invalid Certificate message (Microsoft Outlook cannot sign or encrypt this message because there are no certificates which can be used.) for every email I sent from each of the three accounts. All three certificates are valid until 2020. I have been using these certificates with these accounts since April, signing all messages andĮncrypting messages from one account. I have three digital certificates from Comodo, one for each account.
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