Named anchor in URL upsets IIS server and ASP.Net

When sent from a browser as we know named anchor is not part of GET

http://www.osfi-bsif.gc.ca/osfi/index_e.aspx?articleid=166#warningnotices

Just wondering if scrape this page from the code with the anchor in url ( left accidentally )

oxmlhttp = cre开发者_高级运维ateobject("microsoft.xmlhttp")
oxmlhttp.open('GET', "http://www.osfi-bsif.gc.ca/osfi/index_e.aspx?articleid=166#warningnotices", .t.)
oxmlhttp.send()

what causes such a painful reaction, as in a code ( oxmlhttp.ResponseBody ) we receive back a page :

extract from response "We are experiencing technical difficulties with our Web site. Normal service should resume shortly. We apologize for the inconvenience and thank you for your understanding".

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Is this page yours?

If not, then the developer of the page may have / have not implemented a check to handle #.

To me the error message sounds as if it is a generic error handler when an unhandled exception occurs.