I found a bug in the windows 12.1.x agents (other versions I didn't test), because of which the agent aborts as the target of a large filetransfer. The file was about 44G large. When nearly 8G was transferred, the agent aborted and wrote a dump and a crash_...log file with the following exception message:
Exception information, code 0xC0000005 - The thread attempts to read from or write to a virtual address for which it does not have access.
Exception address 0x00007FF6AB941458
The support finally gave me a version of the agent that seems to work (the filetransfer is still running, but the file is already larger than 8G). I'll let you know when the bugfix is released.
Regards, Nicole