The outlook security certificate error arises when the security certificate used by your email server has expired or becomes invalid. The Outlook certificate error means that the security certificate that your connected server was using cannot be verified. Moreover, this also means that there are no prior certificates available before the expiry period. There are two aspects of updating the certificate: If you are an administrator, you need to update a new certificate. Whereas, if you are an end-user, then you may ask your admin to update the certificate. For a non-technical user, the error may seem hard to configure,…