Outlook security certificate error Once done, Select yes to accept the certificate import> Restart Outlook. There are several reasons your Outlook security certificate is not working. Jun 25, 2025 · Describes an issue where you receive a There is a problem with the proxy server's security certificate error when Outlook tries to connect to a server by using an RPC connection or an HTTPS connection. If they click on view certificate, it points to the old cert, not the… Oct 25, 2023 · Learn about Outlook Certificate Error and how to fix them with 4 expert-recommended methods in a few simple steps. An Exchange certificate should include the autodiscover and regular (ie webmail. Describes an issue that triggers a "The name on the security certificate is invalid or does not match the name of the site" warning in Outlook in a dedicated or ITAR Office 365 environment. If you are one of those users then we have a perfect guide for you today that will help you fix the security certificate error on Outlook. Sep 21, 2023 · There can be multiple reasons that cause Outlook certificate error and other alerts. However, the domain name (the portion of your email address that appears after the @ symbol) is not listed in the certificate. I recently renewed the Exchange Server Certificate. u3i n547 b3n64 fson 2l pnhc7 6xey debpf yaal 6nxnbrp