Cannot Send Emails With Large Attachments In VS 2010

Sep 21, 2010

I've gone through this link. (

It is not possible to send an e-mail with an attachment larger than 4 MB in .NET Framework 4.0. The same code works for small and large files if you set the target platform from .NET Framework 4.0 to .NET Framework 3.5. So this cannot be a problem with our mail-configuration! I get no error if I attach e.g. 10 files of 2 MB! I searched through Google but I didn't get it.

Workaround solution is not working fine as expected. After using this workaround for a while, I found that some files are corrupted. So this is not a solution for this bug.

We've applied that Microsoft patch and we're still seeing the issue?

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