2903491 - WEBGUI: blank page with SAPK-75017INSAPBASIS

• WEBGUI access results in a blank page.
• Network trace shows content header like this:
  

  HTTP/1.1 200 OK
  content-type: text/html
  content-length: 0
  pragma: no-cache
  cache-control: no-store
  expires: Tue, 01 Jan 1980 1:00:00 GMT
  x-xss-protection: 1; mode=block
  saplb<sid>: <host>_<SID>_00
  sap-server: true
  sap-perf-fesrec: ...

• Transaction launcher in Web UI returns a blank screen

• SAP NetWeaver 7.50 with SAP_BASIS SP17
• SAP GUI for HTML (webgui)

SAP GUI for HTML , webgui , blank , not working , empty page , white , window is blank , blank screen ,  WEB GUI , CL_HTTP_EXT_ITS_2, launcher, transaction launcher , KBA , 750 sps17 , sp17 , starting , BC-FES-WGU , SAP GUI for HTML , BC-FES-ITS , SAP Internet Transaction Server , CA-WUI-APF , Application Frame , Problem