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

## SYSLOG Details
- **Message**: evMainLoop return value: <variable>return-value</variable>, error: <variable>error-message</variable>
- **Help**: slbd returned from event loop unexpectedly
- **Description**: The usp trace daemon(slbd) returned from an event loop, which it should never do.
- **Type**: SNO: Should Not Occur
- **Severity**: emergency
- **Cause**: -
- **Action**: -
- **Attributes**: return-value
error-message
- **Facility**: ANY

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