Certificate with specified subject not found. Agents will not be able to connect to the server

Products

• Carbon Black App Control (formerly Cb Protection)

Issue/Introduction

• After logging into the console the following error is displayed in red text across each page:

  Certificate with specified subject not found. Agents will not be able to connect to the server

• Agents disconnected

Environment

• App Control Server: All Supported Versions

Cause

This issue occurs when a user manually deletes the agent communication certificate from the Windows Trust Store on the App Control application server.
 

Resolution

• If there is a backup of the certificate navigate to System Configuration > Security > Choose File and Import Server Certificate From PKCS12 File.
• If there is no backup of the certificate, generate a new certificate using the following KB solution.

Additional Information

• To determine which certificate the App Control Server is looking for, run query:

  use das; select * from das.dbo.shepherd_configs with (nolock) where name = 'sslcertificate'