Order Entry Transaction: Posting Not responding

A few times I need to restart the server to fix the "Not responding" issue when posting order entry transaction. Is there any other way to fix the issue that I don't need to restart the server? The client Operating system is WIndows 7 and Windows 12 R2 is the server. 

ISSUE: the window will stop responding after posting, it just hangs and if you forced quit an error will pop "Sage 300 ERP UI Container has stopped responding".