E3Run implements a COM call filter designed to avoid reentrant calls. This filter by default is disabled and to enable it, which is recommended only in systems that present errors or locks without an apparent cause, users can modify the Filter enabling item.

If this item is modified, an Yes answer to question Enable COM messages' filter? enables this filter and a No answer disables this filter.

This configuration is read from Registry only when E3Run is started. Therefore, when changing Registry Elipse E3 must be restarted.

On Elipse E3's Full log users can check for reentrant COM calls, for debugging purposes.