You are not able to run a CER job or data collection on the agent on the CCS Application server or remote CCS Managers, and you get the following error:
"Error received from Agent: Failed to update one or more files".
CCS 12.5.x and CCS 12.6
The Security Content Update (SCU) and/or the Agent Content Update (ACU) has not been installed on the local agent on the Application Server or remote Managers.
NOTE: When installing a CCS Manager the security content (SCU) does not get automatically installed on the local agent itself and it needs to be installed manually.
Manually apply the correct SCU/CR to the local agent or run an Agent Content Update (ACU) job. If you apply the SCU manually, you will need to reregister the agent to a manager to update CCS with the SCU that has been applied.
Once the content is properly installed on the agent, data collection/CER jobs should run successfully