WinSyslog Event ID 11138: SNMP Trap Receiver: SNMP operation raised an exception#

Answer#

SNMP Trap Receiver: SNMP operation raised an exception. The product recorded this while processing snmp trap receiver; the appended event detail identifies the affected object, operation, or provider error.

Event details#

Event ID: 11138
Severity: Error
Component: SNMP Trap Receiver
Windows Event Log source: AdisconWinSyslog
Available since: 26.07
Message pattern: SNMP Trap Receiver: SNMP operation raised an exception. Additional detail: {event_detail}

Possible causes#

Sender and receiver transport, port, SNMP version, security or community, OID, or value type do not match.
The receiver is not bound, a firewall drops the traffic, or the SNMP library returned the appended runtime error.

Immediate checks#

Record transport, endpoint, SNMP version, security or community, OIDs, and the complete runtime detail.
Confirm the intended receiver process owns the configured endpoint and accepts a paced test trap.
Verify the received OID and value before changing filters or MIB settings.

Detailed procedures#

Verify an SNMP trap sender and receiver path — Confirm transport, endpoint, SNMP version, security/community, OIDs, and receipt.
Verify a UDP path without assuming delivery — Confirm receiver binding, firewall policy, and positive receipt for a paced sample.
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#

Repeat or monitor the affected operation and confirm that Event ID 11138 does not recur and that snmp trap receiver processing continues.

Evidence to collect#

The complete Windows Application Event Log entry, including all event detail.
The product name, exact version, service account, and event timestamp with time zone.
A configuration export and debug log covering the same time window, with secrets removed.

Escalation#

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