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

## SYSLOG Details
- **Message**: sigprocmask (restore) failed for command '<variable>command</variable>': <variable>error-message</variable>
- **Help**: A child process of the management daemon could not unblock signals
- **Description**: After the management daemon (MGD) creates a new process to run a command the child process unblocks signals. This child was unable to unblock signals.
- **Type**: SNO: Should Not Occur
- **Severity**: error
- **Cause**: An internal software failure occurred.
- **Action**: Contact your technical support representative.
- **Attributes**: command
error-message
- **Facility**: ANY

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