# [IPFD_PID_FILE_UPDATE](https://apps.juniper.net/syslog-explorer/?msg=IPFD_PID_FILE_UPDATE)

## SYSLOG Details
- **Message**: Unable to update process PID file: <variable>error-message</variable>
- **Help**: ipfd could not update PID file
- **Description**: The IPFD tried to write the file that records its process ID, which is to prevent multiple instances of the process from running simultaneously. It failed to lock file and exited with this message.
- **Type**: SNO: Should Not Occur
- **Severity**: error
- **Cause**: -
- **Action**: -
- **Attributes**: error-message
- **Facility**: LOG_DAEMON

## Found this message in the following releases:
- [Junos OS 24.2R1](https://apps.juniper.net/syslog-explorer/?msg=IPFD_PID_FILE_UPDATE&sw=Junos%20OS&rel=24.2R1)
- [Junos OS 23.4R1](https://apps.juniper.net/syslog-explorer/?msg=IPFD_PID_FILE_UPDATE&sw=Junos%20OS&rel=23.4R1)