Your connection is not private Attackers might be trying to steal your information from NET::ERR_CERT_REVOKED Dynamics 365 Finance and Operations

 All of sudden the below error coming up while access my DEV environment application.

Since all Dynamics environments are deployed using LCS and the Cert used is owned by Microsoft we have limited ability to fox the issue on our own. This is why Microsoft built functionality into LCS to help us with this. To fix the issue, just look up the environment in LCS, click Maintain and select Rotate Secrets

The Cert you need to fix is the SSL Certificate

Simply click Rotate SSL Cert and wait for the process to finish. In my experience you will also need to reboot the VM.