---
title: "Registering Event Log on Windows"
id: event-log-registration
pg_version: "20devel"
---

<a id="event-log-registration"></a>

## 18.12. Registering Event Log on Windows

To register a Windows event log library with the operating system, issue this command: 
regsvr32 `pgsql_library_directory`/pgevent.dll
 This creates registry entries used by the event viewer, under the default event source named `PostgreSQL`. 

To specify a different event source name (see [`event_source` (`string`)](runtime-config-logging.md#guc-event-source)), use the `/n` and `/i` options: 
regsvr32 /n /i:`event_source_name` `pgsql_library_directory`/pgevent.dll
 

To unregister the event log library from the operating system, issue this command: 
regsvr32 /u [/i:`event_source_name`] `pgsql_library_directory`/pgevent.dll
 


> [!NOTE]
> To enable event logging in the database server, modify [`log_destination` (`string`)](runtime-config-logging.md#guc-log-destination) to include `eventlog` in `postgresql.conf`.