=== HTTP code : 401 ===

Response headers
================
HTTP/1.1 401 Unauthorized
Cache-Control: private
Content-Length: 18
Content-Type: application/json; charset=utf-8
Set-Cookie: bcookie=171f07139029498ba794052e222edc8a3b2f89f6b31947e7805bb7f4d35fe94e; expires=Thu, 15-Apr-2021 19:48:43 GMT; path=/
Set-Cookie: throttle-f9151a904e07fa0812b7b9fb20b6f1ab=1; domain=.lynda.com; expires=Wed, 16-Oct-2019 08:11:11 GMT; path=/; HttpOnly
Set-Cookie: token=52816bf8-dc36-4d8b-802c-84a468fc12e6,47b80b64210c2d7dc98bc1862065196d,8D7ScKibP9xolfnGVw8gyYlZOtXq8+xOedgx5QbwhWv7OxNkXIs0sQawnmtEAGNXqQhz3zfEGHcUWkBWMfRNOg==; expires=Tue, 16-Apr-2019 12:11:11 GMT; path=/; HttpOnly
Set-Cookie: throttle-f9151a904e07fa0812b7b9fb20b6f1ab=1; domain=.lynda.com; expires=Wed, 16-Oct-2019 08:11:11 GMT; path=/; HttpOnly
Set-Cookie: throttle-f9151a904e07fa0812b7b9fb20b6f1ab=1; domain=.lynda.com; expires=Wed, 16-Oct-2019 08:11:11 GMT; path=/; HttpOnly
X-Frame-Options: SAMEORIGIN
X-Powered-By: ASP.NET
Date: Tue, 16 Apr 2019 08:11:10 GMT
Set-Cookie: NSC_tw5_xxx-iuuq_wt=ffffffff096e9e2345525d5f4f58455e445a4a423660;expires=Tue, 16-Apr-2019 08:16:11 GMT;path=/;httponly

Request headers
================
HEAD / HTTP/1.1
Host: www.lynda.com
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Accept: */*
Referer: https://itxdesign.com
Connection: close


Link is valid.