Bug ID 991929: AJAX Blocking Page causes an AJAX response callback to be called twice

Last Modified: Apr 28, 2023

Affected Product(s):
BIG-IP ASM(all modules)

Known Affected Versions:
15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 15.1.4,, 15.1.5,, 15.1.6,, 15.1.7, 15.1.8,,, 16.0.0,, 16.0.1,,, 16.1.0, 16.1.1, 16.1.2,,, 16.1.3,,,,, 17.0.0,,

Opened: Feb 09, 2021

Severity: 3-Major


A single page application functions incorrectly after enabling Single page application in a Bot Defense profile.


Single page application AJAX request does not make it to the backend server.


-- ASM provisioned -- ASM policy and Bot Defense profile attached to a virtual server -- Single page application enabled in Bot Defense profile -- AJAX blocking page enabled in an ASM policy


Disable AJAX blocking page in the ASM policy.

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips