I test the sample code from home with outlook.com account, but I have a error message, with follow message $exception{“Invalid response starting char.”} [image] Do you help me?

Hi Erick, Another thing you may want to check is what message your get on ImapClient.LogOutput. For example, like this: Using imap = New ImapClient("...") imap.LogOutput = Console.Out imap.Connect() End Using Can you tell me what you get? Regards, Mario

Problem with IMAP/POP outlook/office 365 (Invalid response starting char.)

GemBox.Email

afreedoff April 27, 2023, 3:31pm 4

Thank’s!
When I debug, I get message with problems that I haven’t TLS 1.2

I solved with add this :

Const Tls12 As SslProtocols = DirectCast(&HC00, SslProtocols)
imap.Connect(Tls12)

Obtained from: