Pega version : 8.2.2

We recently upgraded from 8.1.1 to 8.2.2. Post upgrade getting below error (on screen when login through end user url, but on page reload it's working fine.

There has been an issue; please consult your system administrator
Status:fail
Operator:Unauthenticated or not available
Node:No ID available

Log :

2019-06-24 11:01:34,649 [jsse-nio-8407-exec-9] [  STANDARD] [                    ] [hentication:01.01.01] (ngineinterface.service.HttpAPI) ERROR ibpmadm-dev.cisco.com| Proprietary information hidden saushriv -  Proprietary information hidden: com.pega.pegarules.priv.context.CookieDisabledException
com.pega.pegarules.priv.context.CookieDisabledException: An error has occurred which indicates that your browser does not support Cookies. You must enable Cookies in order to use this application
        at com.pega.pegarules.session.internal.engineinterface.service.HttpAPI.establishRuntimeContext(HttpAPI.java:5852) ~[prprivate.jar:?]
        at com.pega.pegarules.session.internal.engineinterface.service.HttpAPI.postAuthentication(HttpAPI.java:2838) ~[prprivate.jar:?]
        at com.pega.pegarules.session.internal.engineinterface.service.HttpAPI.handleAuthentication(HttpAPI.java:2689) ~[prprivate.jar:?]
        at com.pega.pegarules.session.external.engineinterface.service.EngineAPI.activityExecutionProlog(EngineAPI.java:597) ~[prenginext.jar:?]
        at com.pega.pegarules.session.external.engineinterface.service.EngineAPI.processRequestInner(EngineAPI.java:436) ~[prenginext.jar:?]

Included below on prconfig but no luck-

“<env name="HTTP/SetSecureCookie" value="false"/>”

<env name="http/setsecurecookie" value="false" />

Pls assist.

Cheers-

Pavan

***Edited by Moderator: Lochan to mask proprietary information***