I this problem already send but still is on table. With Zorro 2.15.3 and win server 2012, I see in the "task manager" Zorro
"not responding". I trying use lock() and unlock() but no change. If running only one instance, all is OK.
I found the same problem with older version:
https://opserver.de/ubb7/ubbthreads.php?ubb=showflat&Number=474020#Post474020