Bug ID 761091: Missing charset specification in response page after upgrade

Last Modified: Nov 22, 2021

Bug Tracker

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

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5,,,, 12.1.6

Opened: Mar 13, 2019
Severity: 4-Minor


Blocking response pages are missing charset specification after upgrade, and appear garbled for non-UTF-8 policies.


Blocking response pages appear garbled.


-- A blocking response page is configured with non-UTF-8 characters. -- ASM is upgraded.


To workaround this issue, follow this procedure: 1. Change the policy to transparent and save. 2. Change it back to blocking and save. 4. Apply policy. Now the response page now appears correctly.

Fix Information


Behavior Change