2635958 - Fiori Launchpad initial access from SAP Portal fails - users need to click Refresh button

• There is an issue with users trying to access the Fiori Launchpad from SAP external portals
• When accessing the Fiori Launchpad ("My Launchpad") tab from the external SAP Enterprise portal, users cannot access the Fiori Launchpad initially
• The users get a "this page can't be displayed" error in IE11
  
  
• Or an unhappy face "the connection was reset" error in Google Chrome
  
  
• At this point, if the user hits the browser's refresh key, then the Fiori Launchpad loads good or ok
• Once the user has access to the Launchpad, the user will have no issues being able to access the launchpad again during the same session
• The business unit would like to fix this initial error so that the admin team do not need to have to instruct users to hit refresh all the time as a workaround
• Users and business unit cleared the browsers and UI5 caches and seeing the same issue
• When tracing via an HTTP watch trace, an error "ERROR_INTERNET_CONNECTION_RESET" is logged when connection dies with the "This page cannot can't be displayed"
• HWL file HW3001 - The request returned an HTTP status code failure or caused an internal browser error. Failing request may prevent a web page functioning correctly and caused performance problem
• Error only occurs when the external portal system is accessed through F5 - Reverse Proxy

• F5 Reverse Proxy
• SAP NetWeaver Gateway 7.40

"SAP Portal fails with Fiori Launchpad","Fiori Launchpad requires a refresh to work","Fiori Browser refresh","IE This page can't be displayed Fiori","My Fiori Launchpad Connection reset","users cannot access portal to Fiori", "F5 IRule Fiori", "Chrome The connection was reset Fiori Launchpad" , KBA , CA-FE-FLP-EU , Please use CA-FLP-FE-UI , Problem