To access SQL Diagnostic Manager over HTTPS with a self signed certificate you may need to enable SSL on SQL Diagnostic Manager Rest service, and add a certificate.
Use a self-signed certificate
Use a self-signed certificate works only when IDERA Dashboard and SQL Diagnostic Manager are installed on a local machine.
Creating a self signed certificate
Before binding a certificate to SQL Diagnostic Manager, add a certificate for IDERA Dashboard. For information on how to create a self signed certificate for Dashboard refer to Resolving the certificate error message.
Binding a certificate to SQL Diagnostic Manager
After creating a self signed certificate for the Dashboard found in the Resolving the certificate error message page, follow the instructions on Binding a certificate for SQL Diagnostic Manager.