Zabbix agent2 terminates silently with only the following log:

Zabbix Agent 2 stopped. (7.0.16)

No additional error or stack trace is printed.

with DebugLevel=5 logging:

• STOP 1 (05:00:14):

  2025/11/27 05:00:14.234024 executed exporter task for itemid:50294 key 'eventlog[system,,Critical,Microsoft-Windows-DNS-Client,,,skip]'
  2025/11/27 05:00:14.234024 Calling C function "zbx_get_agent_item_nextcheck()"
  2025/11/27 05:00:14.234024 Calling C function "free(cdelay)"
  2025/11/27 05:00:14.716451 listener has been stopped
  2025/11/27 05:00:14.716451 [101] server connector has been stopped
  2025/11/27 05:00:14.716451 created final stopper task for plugin Cpu
  2025/11/27 05:00:14.716451 plugin Cpu: executing stopper task
  2025/11/27 05:00:14.716451 manager has been stopped
  2025/11/27 05:00:14.716451 [101] memory cache has been stopped
  2025/11/27 05:00:14.716451 Zabbix Agent 2 stopped. (7.0.16)
  2025/11/27 05:16:54.334558 Starting Zabbix Agent 2 (7.0.16)
  

• STOP 2 (05:24:37):

  2025/11/27 05:24:37.220119 executed exporter task for itemid:50317 key 'eventlog[system,,Error,Microsoft-Windows-WindowsUpdateClient,,,skip]'
  2025/11/27 05:24:37.220119 Calling C function "zbx_get_agent_item_nextcheck()"
  2025/11/27 05:24:37.220758 Calling C function "free(cdelay)"
  2025/11/27 05:24:37.839076 [101] server connector has been stopped
  2025/11/27 05:24:37.839076 listener has been stopped
  2025/11/27 05:24:37.839076 manager has been stopped
  2025/11/27 05:24:37.839076 [101] memory cache has been stopped
  2025/11/27 05:24:37.839076 Zabbix Agent 2 stopped. (7.0.16)
  2025/11/27 05:24:38.199445 Starting Zabbix Agent 2 (7.0.16)
  

FYI. A similar crash log related to Calling C function "free(cdelay)" was reported in wmi.getall (ZBX-25725). In this case it was happen Windows Event Log key (system).