The following error is displayed due to incorrect session time out settings on StoreFront:
Cannot Complete Your Request
If any timeout settings have been modified manually through the web.config file located under C:\inetpub\wwwroot\Citrix\Authentication\web.config then make sure the SessionState timeout field is set to the default value of 5.
For example - <sessionState mode="InProc" cookieName="Citrix_AuthSvc" timeout="5" />
The following error is displayed due to incorrect session time out settings on StoreFront.