WebClient generates (401) Unauthorized error
c#, download, webclient
Solution
Apparently the OS you are running on matters, as the default encryption has changed between OSes. This blog has more details: http://ferozedaud.blogspot.com/2009/10/ntlm-auth-fails-with.html
This has apparently also been discussed on stackoverflow here: 407 Authentication required - no challenge sent
I would suggest read the blog first as the distilled knowledge is there.
Problem
I have the following code running in a windows service: ``` WebClient webClient = new WebClient(); webClient.Credentials = new NetworkCredential("me", "12345", "evilcorp.com"); webClient.DownloadFile(downloadUrl, filePath); ``` Each time, I get the following exception ``` {"The remote server returned an error: (401) Unauthorized."} ``` With the following inner exception: ``` {"The function requested is not supported"} ``` I know for sure the credentials are valid, in fact, if I go to downloadUrl in my web browser and put in my credentials as evilcorp.com\me with password 12345, it downloads fine. What is weird though is that if I specify my credentials as me@evilcorp.com with 12345, it appears to fail. Is there a way to format credentials?