Error Type:msxml3.dll (0x80070005) Access is denied.

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Dear Sir,

I am getting the following error

"Error Type:msxml3.dll (0x80070005) Access is denied"

when writing the following lines of code:

xmlhttp.Open("GET","http://feeds.reuters.com/reuters/topNews", false);

xmlhttp.Send();

can anyone help me in this please?

Thanks.