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

## SYSLOG Details
- **Message**: Unable to open PID file <variable>filename</variable>
- **Help**: lrmux could not open rpd PID file
- **Description**: The Logical System Multiplexer process (lrmuxd) could not open the indicated PID lock file for a logical system process (rpd).
- **Type**: Error: An error occurred
- **Severity**: error
- **Cause**: -
- **Action**: -
- **Attributes**: filename
- **Facility**: LOG_DAEMON

## Found this message in the following releases:
- [Junos OS 26.2R1](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=26.2R1)
- [Junos OS 25.4R1](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=25.4R1)
- [Junos OS 25.2R2](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=25.2R2)
- [Junos OS 25.2R1](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=25.2R1)
- [Junos OS 24.4R2](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=24.4R2)
- [Junos OS 24.4R1](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=24.4R1)
- [Junos OS 24.2R2](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=24.2R2)
- [Junos OS 24.2R1](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=24.2R1)
- [Junos OS 23.4R2](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=23.4R2)
- [Junos OS 23.4R1](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=23.4R1)
- [Junos OS 23.2R2](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=23.2R2)
- [Junos OS 23.2R1](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=23.2R1)
- [Junos OS 22.4R3](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=22.4R3)
- [Junos OS 22.4R2](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=22.4R2)
- [Junos OS 22.4R1](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=22.4R1)
- [Junos OS 22.2R3](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=22.2R3)
- [Junos OS 22.2R2](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=22.2R2)
- [Junos OS 22.2R1](https://apps.juniper.net/syslog-explorer/?msg=LRMUX_LRPD_PID_OPEN&sw=Junos%20OS&rel=22.2R1)