Ready. It works. I have the Kaspersky AV but it doesn't scan my outgoing e-mails. That wans't the issue.I tried with dispose() on Attachments and it worked.

With this:

......

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It didn't work. I wrote my code below. I tried clearing the attachments files but it keeps my file in use.

I tried with these lines too:

myHtmlMessage.Attachments.Clear()

myHtmlMessage = Nothing

mySmtpClient = Nothing

It...