Bug ID 632675: Error in browser console when using CSRF on IE11 set to Compatibility Mode

Last Modified: Nov 07, 2022

Bug Tracker

Affected Product:  See more info
BIG-IP ASM(all modules)

Known Affected Versions:
13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,, 13.1.5,

Fixed In:

Opened: Dec 08, 2016
Severity: 4-Minor


The following error appears on the browser console: SCRIPT438: Object does not support property or method 'addEventListener' 08220d683cab20009ba937be753a03167e82ad6c929e8154784f261d9004add54c71bcba57427a1b (66,283) This might cause problems in the application the browser is serving.


Errors appearing on the browser console, possibly impacting the functionality of the application.


-- CSRF feature is enabled on the ASM Policy. -- The HTML on the response is setting Compatibility Mode to IE5 using this meta header: <meta http-equiv="X-UA-Compatible" content="IE=5"> -- Client browser is Microsoft Internet Explorer v11 (IE11).



Fix Information

Errors regarding addEventListener not supported no longer appear on the browser console of IE11 in Compatibility Mode when CSRF is used.

Behavior Change