FRM-92050 failed to connect to Server /forms/servlet -1 coming after R12.1.3 installation or upgrade from 11i to R12.1.3

ISSUE:

While opening forms in IE8, its getting below error.

CAUSE:

Issue comes in Internet Explorer IE8.

SOLUTION:

Do below steps:

Disable the XSS filter as below.

1. Open Internet Explorer 

Go to Tools -> Internet Options -> Click on Security Tab

Select Internet -> Click on Custom Level

Scroll down to entry "Enable XSS Filter" > Select Disable XSS Filter button and Apply

Reopen the forms , it should work.