Resolving the error typically involves a progression from simple to more advanced fixes:
The "plugin companion broker process is not running" error is typically a symptom of a between the main application and its safety mechanism for plugins. While usually caused by overzealous antivirus software or file corruption, it requires investigation into system logs to pinpoint the exact failure point. Reinstallation is the recommended remediation action for end-users; developers should investigate process lifecycle management and dependency handling. plugin companion broker process is not running