I have created a sample asp.net application and try to scrape data from my server using httpwebrequest. But some times I got this above error. I have done some searches on g
This is certainly a server problem-- the server is not following the HTTP specification and the .NET client is flagging this as a potential problem. "Unsafe" is I think somewhat of a misnomer. There's not really a big security issue here, only non-compliance with the RFC which is bad but unfortunately not rare.
So, as you found in Google, the way to get around the problem is to apply the following configuration change: