Last Modified: May 04, 2026
Affected Product(s):
BIG-IP TMOS
Known Affected Versions:
21.0.0
Fixed In:
21.0.0.1
Opened: Nov 27, 2025 Severity: 3-Major
The MCP would hang during shutdown if any exceptions or abnormal restarts occurred while booting up.
MCPD will not be up and running
Rarely getting this, so there is no specific scenario
MCPD restart
Make sure it kills the proper PID while rebooting.