When Argo CD syncs fail, it’s important to identify whether the issue is due to configuration drift, missing resources, or permissions. The first step is to check the Argo CD dashboard or use argocd app get to review sync errors. Most failures can be fixed by correcting YAML files or resolving Kubernetes resource conflicts. Setting automatic retries and alerts can reduce downtime. Some teams also enable “self-healing” options, allowing Argo CD to restore applications to their desired state automatically. Regular monitoring and testing changes in staging before production can prevent many sync issues altogether.