Customers running on ProxySG300/600 running pre 188.8.131.52 will have the below error when downloading source from Application Classification > General > Download > Download Now.
% Invalid response "426" from Web App Service
Download URL : https://subscription.es.bluecoat.com/classification/database
There is a limitation that SG300/600’s running earlier than 184.108.40.206 is incompatible with the full CASB dataset thus a permanent restriction for devices prior to this version.
Upgrade the ProxySG 300/600 to 220.127.116.11 and later to be able to download the dataset.
ProxySG 300 prior to 18.104.22.168 (22.214.171.124)
ProxySG 300 on 126.96.36.199 or later