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To do so, go to your email account and navigate to advanced settings. Find the option to accept all certificates and enable it. This should get your certificate trusted by your device. If accepting all certificates didn't work, you should check if your operating system is updated or not.

Windows 10/11 Navigate to Control Panel > Network and Sharing Center > Change adapter settings. ... Double-click the interface/network in question and choose Properties. On the Authentication tab, click Settings. Along the top, uncheck the box for Verify the server's identity by validating the certificate.

An email certificate is a digital file that is installed to your email application to enable secure email communication. These certificates are known by many names ? email security certificates, email encryption certificates, S/MIME certificates, etc.

View your certificates On the File tab, click Options. In the left pane, click Trust Center. ... In the left pane, click Email Security. Under Encrypted e-mail, click Settings. Under Certificates and Algorithms, click Choose. Click the certificate that you want, and then click View Certificate.

The process of getting an email certificate is very simple. You simply apply for one from an SSL Certificate Authority and then prove that you own your email address. You'll typically respond to an email that the certificate provider sends to your address.

The most common cause of a "certificate not trusted" error is that the certificate installation was not properly completed on the server (or servers) hosting the site. Use our SSL Certificate tester to check for this issue.

Email Security Helps to Prevent Noncompliance An additional benefit of using an email certificate is that it can help your organization with regulatory compliance.