I have installed visual studio 2015 (Update 3) on windows server 2012 R2 then after I have installed the Pega Robotics studio plugin. Windows automation is working fine, but web automation is not working in ie and chrome, while using ie at the time of interrogating ie become crashed, from event viewer identified that ie is freezing and getting ntdll.dll crash information. When I am using chrome not able to get the interrogation window.