I have webpart which render the last news from rss channel with url: http://habrahabr.ru/rss/company/my_company/blog. I use:

            var doc = new XmlDocument();
            var nodes = doc.SelectNodes("rss/channel/item");

Where urlToBlogThroughtRss is the url above. Yesterday all was fine but today I have exception:

System.Security.Authentication.AuthenticationException: The remote certificate is invalid according to authentication results.

When I tried to do some steps in simple console project I have not proplems.

What was happend?

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