Bug ID 553367: Fast automatic transactions break cookie decryption

Last Modified: Oct 06, 2020

Bug Tracker

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

Opened: Oct 20, 2015
Severity: 3-Major


When a fast client experiences a fast macro submitting a form, this can cause the encryption keys to be out of sync. In debug mode, this can be seen from a log that vToken cookie unseal falied.


Occasional false negative auto-transaction alerts.


A fast macro running an automatic transaction on a fast browser.


Support can implement a beforeload function that solves the issue by deleting unsynchronized cookies.

Fix Information


Behavior Change