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

## SYSLOG Details
- **Message**: Error: <variable>error-message</variable>
- **Help**: COSD encountered rtsock library error
- **Description**: COSD uses rtsock library for reading and writing data from and to kernel. The specified error occured while using rtsock library to read/write data.
- **Type**: Internal: Internal log message
- **Severity**: unknown
- **Cause**: An internal software failure occurred.
- **Action**: Contact your technical support representative.
- **Attributes**: error-message
- **Facility**: LOG_DAEMON

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