A site that is allowed in Web Isolation (WI) is denied by the Online Content Server (OCS)
Akamai blocks some AWS source IPs and denies these requests. Either one of the symptoms are observed
Web Isolation cloud deployment
Affects only cloud environments.
A bypass rule won't work , PAC level bypass is required for immediate mitigation.
For Permanent fix, the website needs to be submitted to Engineering/Dev Team to be added to take alternate route which prevents AWS ip blockage when browsing to websites with Akamai bot detectors.