Hi Mohammad,
I suggest checking the event logs and see what error or information there.
Windows Application event log usually shows some information.
Also, you can access the Blue Prism knowledge base to find more information on how to enable Mapiex logging.
I also suggest trying to turn off/on the Cached Exchange Mode and see if it helps or not.
------------------------------
Hossein Azimi
Customer Support Engineer, APAC
Blue Prism
Sydney NSW
------------------------------