This error typically occurs when a secure connection (HTTPS) cannot be established due to a problem with the certificate presented by the server. The client software, in this case IntelliJ IDEA, cannot verify the authenticity of the server’s certificate. This could be because the certificate is expired, self-signed, issued by an untrusted authority, or the certificate chain is incomplete. A common example is attempting to access a development server using a self-signed certificate. The client software rejects the connection to prevent potential security risks.
Secure connections are fundamental to protecting sensitive data transmitted over the internet. Certificate validation ensures that communication is indeed with the intended server and not a malicious actor. This process is critical for preventing man-in-the-middle attacks and ensuring the integrity of downloaded software updates or plugins. The increasing prevalence of HTTPS and the heightened awareness of online security necessitate robust certificate management and validation practices.
