Hi Saad,
Actually there is no error on the screen or in the event viewer,i saw in the report builder the report is working fine and parameters are shown in a normal way.
The above image i showed is the issue, where the view report button and even parameters are not rendered and clickable.
The only error i see is below in event viewer but its not frequent.
Report Server (MSSQLSERVER) cannot load the TERADATA extension.
Report Server (MSSQLSERVER) cannot load the SQLPDW extension.
Report Server (MSSQLSERVER) cannot load the ORACLE extension.
Any suggestions please ?