Bug ID 995629: Loading UCS files may hang if ASM is provisioned

Last Modified: Jul 23, 2021

Bug Tracker

Affected Product:  See more info
BIG-IP ASM, Install/Upgrade(all modules)

Known Affected Versions:, 16.0.1,, 16.0.0,, 15.1.2, 14.1.4,, 13.1.4,,

Fixed In:
16.1.0,, 15.1.3,,

Opened: Feb 19, 2021
Severity: 2-Critical


If a UCS file from a BIG-IP system running a different software version that also has an ASM configuration is loaded onto a device that already has ASM provisioned, the load may hang indefinitely.


-- UCS load might fail. -- Config save and load operations fails while the UCS load hangs. The failure of those operations may not be obvious, leaving the BIG-IP saved configuration different from the running configuration.


-- A system that has ASM provisioned. -- Loading a UCS file with an ASM configuration that comes from a different system.


If you encounter this, run 'load sys config default' and de-provision ASM. The UCS file should then load successfully.

Fix Information

Loading UCS files no longer hangs if ASM is provisioned.

Behavior Change