SmtpClient : Failure sending mail when attachement is larger than 3MB RRS feed

  • Question

  • Hello,

    I have a problem when i want to use the class "System.Net.Mail.SmtpClient" to send mail if the email attachment is larger than 3 MB.
    I use .Net 4.0 on VS2003. I can't downlod the fix in this URL https://support.microsoft.com/en-us/kb/2183292 
    All the links to fixes and discussions on the connect.microsoft.com site that I've come across are broken. 

    Can you help me?

    Monday, January 4, 2016 2:25 PM


  • Hi Bobal,

    Please drag to the end of this support page, and give your Feedback to the KBsupport engineer.

    I also suggest you try as following.

    To resolve this problem, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft website:


    If your issue is very urgent, please redirect to a paid support service

    Phone support channel: https://msdn.microsoft.com/en-us/library/bb266240.aspx, because it is beyond what we can do for forum support

    Have a nice day!


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    • Edited by Kristin Xie Tuesday, January 5, 2016 2:19 AM
    • Proposed as answer by Kristin Xie Friday, January 8, 2016 8:45 AM
    • Marked as answer by DotNet Wang Tuesday, January 19, 2016 1:13 AM
    Tuesday, January 5, 2016 2:17 AM