: Internet Explorer iframe JavaScript access denied I have a webpage on domain www.example.com that has an <iframe> with a page test.html from sub.example2.com. test.html includes a JavaScript

@Kristi941

This is due to the "Same Origin" security policy.


The “Same Origin” policy limits the access of one window to another.

The reason behind that is security. If you have blabla.com in one
window and gmail.com in another one, then you’d not want a script from
blabla.com to access or modify your mail or run actions in context of
gmail on your behalf.

The essence of the Same Origin policy can be formulated as: windows
can work in contexts of each other only if they are from same
protocol://domain:port, or, shortly, from same origin.

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