This article describes the issues with File System being Out of Synch between FoE nodes.
Example screenshots from the FoE Server Manager are provided below:
Primary Server showing no issues:
Secondary server showing Out of Synch message:
Replication highlighting issues with specific folders (NTM in this case):
All versions of FoE
Issue is directly caused by other application(s) making changes and saving files within file structure of the Orion Platform. These folders and files are not configured to be protected by the FoE.
Uninstall offending application since making any manual changes (customizations) to the FoE setup automatically overwrites in case of FoE upgrade of the Orion Plugin.