VBA code doesn't work anymore (WinHttpReq)

Hi,

I have a VBA code that used to work several months ago (getting an xls file from the internet), but now it doesn't.
I get a runtime error 2147024891 ("Access denied") at line "WinHttpReq.Send".

Anybody has an idea what could be wrong?
I used to reinstall my Win 7 several weeks ago, maybe that has an influence?

Thanks a lot Code is below.

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Google ftw! Found the answer.

I replaced
Set WinHttpReq = CreateObject("Microsoft.XMLHTTP")
by
Set WinHttpReq = CreateObject("Msxml2.ServerXMLHTTP")

well, still I would be interested, why my code used to work and now I had to change it?

Thanks Maybe this helps someone.