This issue happens because the SSL inspection cannot work properly without the proper certificate. If this scenario occurs, you can follow any of the following solutions to resolve the issue:

Solution 1: Use a web browser on the same machine

The IPS on co-located DSA only monitors the external connection. Therefore, users can successfully connect to the DSM web console using a web browser on the same machine.

1. Log in the Linux or Windows server where the DSM is located.
2. On the server, open a web browser to access DSM web console.
3. On the DSM web console, re-import Tomcat's certificate for the co-located agent.
4. Send policy to the agent to take effect.

Solution 2: Reset the Deep Security Agent

To reset the co-located DSA and manually re-import the certificate:

1. Execute "dsa_control.cmd -r" in the DSA to reset.
2. On the DSM web console, re-import Tomcat's certificate for the agent.
3. Deactivate and then re-activate the agent.

Solution 3: Restore the backup certificate

The installer created a backup copy of the certificate before generating a new one. Users can manually restore the certificate from the backup folder.

1. Stop the Deep Security Manager services.
2. Copy the <DSM_ROOT>\.keystore to <DSM_ROOT>\new.keystore.
3. Copy the backup certificate <DSM_ROOT>\backup\.keystore to <DSM_ROOT>, and overwrite the original one.
4. Restore the keystorePass.
   1. Copy <DSM_ROOT>\configuration.properties to <DSM_ROOT>\new.configuration.properties.
   2. Open <DSM_ROOT>\backup\configuration.properties and copy the line starting with "keystorePass".
   3. Edit <DSM_ROOT>\configuration.properties, paste and overwrite the keystorePass.
   4. Save <DSM_ROOT>\configuration.properties.
5. Start the Deep Security Manager service.

The procedure above lets you access the DSM web console, but the less secured certificate is retrieved. To use the stronger certificate that DS 10.0 installer generated, do the following:

1. On the DSM web console, disable the IPS feature on the co-located DSA.
2. Stop the Deep Security Manager service.
3. Restore the backup files.
   1. Copy the <DSM_ROOT>\new.keystore to <DSM_ROOT>\.keystore.
   2. Copy the <DSM_ROOT>\new.configuration.properties to <DSM_ROOT>\configuration.properties.
4. Start the Deep Security Manager service.
5. Re-import the Tomcat's certificate for the co-located Agent.
6. Enable the IPS.