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The request was aborted: Could not create SSL/TLS secure channel.

The first time that i enter in my page i have this error "The request was aborted: Could not create SSL/TLS secure channel."

If i reload the page this don't appare and it works.

This is the code :

Dim _command As String
_command = "https://www.dropbox.com/oauth2/authorize?client_id=" & _App_key
_command += "&response_type=code"
_command += "&redirect_uri=https://xxxxxx.xxxxx.xx/Test.aspx"

Dim Request As HttpWebRequest
Request = HttpWebRequest.Create(_command)
Request.Method = "GET"
Request.KeepAlive = True
ServicePointManager.Expect100Continue = True
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 Or SecurityProtocolType.Tls11 Or SecurityProtocolType.Tls Or SecurityProtocolType.Ssl3

Request.ContentType = "application/x-www-form-urlencoded" '"application/json" ' application/x-www-form-urlencoded"
Request.AllowAutoRedirect = True
Dim Response As HttpWebResponse = Request.GetResponse()

Is anything about timeout ?

Why if i reload the page this works ?

Thank you

Luca

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Greg-DB

Based on the error message, your machine is having trouble establishing a secure connection to Dropbox. The Dropbox servers are being served with valid SSL/TLS configurations though, and I'm not aware of any current service disruptions that should be causing this. You may want to check if you have any firewall, proxy, VPN, anti-virus, or other security software, etc. that may be interfering with your connections.

Regardless, I see you're attempting to load the contents of the www.dropbox.com/oauth2/authorize page programmatically though. That is a web page that should be loaded directly in the user's system web browser. You should not retrieve it via code. Please refer to the OAuth Guide for more information.