Updating connection failed client cert
See this article's section on Antivirus products for help with specific security products that can produce these errors, such as Avast, AVG and ESET software.
Firefox uses certificates on secure websites to ensure that your information is being sent to the intended recipient and can't be read by eavesdroppers.
It is also possible to use TLS to encrypt inter-node connections in clusters.
This guide covers various topics related to TLS in Rabbit MQ: and more.
If Elliptic curve cryptography (ECC) cipher suites is expected to be used, a recent supported Erlang release is highly recommended.This can produce connection errors or warnings on secure websites.If you see secure connection errors on multiple secure websites, updating your security product or modifying its settings may resolve the issue.When a website that requires a secure (https) connection tries to secure communication with your computer, Firefox cross-checks this attempt to make sure that the website certificate and the connection method are actually secure.If Firefox cannot establish a secure connection, it will display an error page.