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

## SYSLOG Details
- **Message**: Sysctl <variable>sysctl-function-name</variable> failed (errno:<variable>error-message</variable>)
- **Help**: Libcos encountered an error in sysctl operation
- **Description**: The class-of-service(CoS) library(Libcos) failed in performing sysctl operation
- **Type**: SNO: Should Not Occur
- **Severity**: error
- **Cause**: An internal software failure occurred.
- **Action**: Contact your technical support representative.
- **Attributes**: sysctl-function-name
error-message
- **Facility**: ANY

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