You may see the following error entry logged against the BPA Platform event log:
Failed to connect to Task Runner CP for Task 0x800700a4
0x800700a4 is a Windows error which decodes to “No more threads can be created in the system.”
Connection points (The ‘CP’ in the error message) are an integral part of COM infrastructure on which BPA Platform relies.
The fault occurs where a call onto the Task Runner COM object to set up the Task Runner’s connection point fails due to no free threads being available.
A restart of the BPA Platform Server service will resolve the issue.