WinSyslog Event ID 11037: Send to Communications Port action could not write a byte#

Answer#

The action opened the configured communications port but Windows reported an error while writing the message. The product closes the port after the failure.

Event details#

Event ID: 11037
Severity: Error
Component: Send to Communications Port action
Windows Event Log source: AdisconWinSyslog
Available since: 26.07
Message pattern: Error in SendMessage - GetLastError: {error_code}

Possible causes#

The serial device was disconnected or stopped responding.
The port, driver, flow-control, baud-rate, parity, or stop-bit settings do not match the device.
Another process took control of the port or the device driver failed.

Immediate checks#

Translate the Windows error code and confirm the configured port name.
Verify the device and driver state, then compare both endpoints’ serial settings.
Close other applications using the port and send a controlled test message.

Detailed procedures#

Interpret a Windows or Winsock error code — Translate a numeric code without losing its operation or subsystem context.
Validate configuration and reload it safely — Back up, inspect, correct, and test the exact invalid configuration object.
Collect an Event ID and neighboring product events — Preserve the complete event and the product events immediately before and after it.
Export configuration and collect a bounded debug log — Create a text configuration export and time-bounded debug capture, then disable debugging.

Verify the result#

Confirm that the complete controlled message reaches the serial device without Event ID 11037.

Evidence to collect#

The complete Windows Application Event Log entry and neighboring product events from the same time window.
The exact product version, affected service or action name, and event timestamp with time zone.
The affected configuration object and a bounded debug log covering one controlled reproduction.
Remove passwords, tokens, license data, private keys, message payloads, personal data, and customer-identifying names, addresses, hostnames, domains, and network addresses before sharing evidence.

Escalation#

If the event continues after the detailed procedures, collect the listed evidence and contact Adiscon Support.