Error while Connecting Office 365/SharePoint online

Question

Hi,
I'm trying to connect Office 365 from my local and when the execute query runs, it returns an error "For security reasons DTD is prohibited in this XML document. To enable DTD processing set the DtdProcessing property on XmlReaderSettings to
Parse and pass the settings into XmlReader.Create method." Can anyone pls help ?
            var securePassword = new SecureString();
            foreach (char c in password)
                securePassword.AppendChar(c);
            var onlineCredentials = new SharePointOnlineCredentials(login, securePassword);
            using (ClientContext clientContext = new ClientContext(targetSite))
                clientContext.Credentials = onlineCredentials;
                Web web = clientContext.Web;
                clientContext.Load(web,
                webSite => webSite.Title);
                clientContext.ExecuteQuery();
                Console.WriteLine(web.Title);
                Console.Read();
                return clientContext;
Thanks
Rajdeep
rajdeep

Answer 1

Hi,
According to your post, my understanding is that you had an issue to connect to the SharePoint online.
I had tested with your code, and it worked well as below.
Did your project contain other code? Such as parse the XML file?
You can create a new clean project to check with it works.
More reference:
http://stackoverflow.com/questions/215854/prevent-dtd-download-when-parsing-xml
http://stackoverflow.com/questions/13854068/dtd-prohibited-in-xml-document-exception
Thanks & Regards,
Jason
Jason Guo
TechNet Community Support