Event ID 31 — Windows Update failed to download an update.

{
  "system": {
    "provider": "Microsoft-Windows-WindowsUpdateClient",
    "guid": "945A8954-C147-4ACD-923F-40C45405A658",
    "event_source_name": "",
    "event_id": 31,
    "version": 1,
    "level": 2,
    "task": 1,
    "opcode": 12,
    "keywords": 4611686018427387940,
    "time_created": "2022-04-07T08:33:16.220136+00:00",
    "event_record_id": 14,
    "correlation": {},
    "execution": {
      "process_id": 4864,
      "thread_id": 3684
    },
    "channel": "Microsoft-Windows-WindowsUpdateClient/Operational",
    "computer": "WIN-FPV0DSIC9O6.lab.local",
    "security": {
      "user_id": "S-1-5-18"
    }
  },
  "event_data": {
    "updateTitle": "2022-03 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5011558)",
    "errorCode": "0xc1900401",
    "updateGuid": "B5CA12E1-1491-494D-9A17-229D1C97ED05",
    "updateRevisionNumber": 1
  },
  "message": ""
}