We use MAPI to send mail from our program.
After the latest update to Outlook 2016 (Build 7967.2139), we have experienced the following problem:
The first mail is sent correctly through Outlook. All mails after that, fail to send.
The new mail session is created successfully, logon to the mailsession is successful, but
the mailsend fails. (No Outlook "Allow"-window appear)
Reverting to the previous build of Outlook solves this problem, but is not an acceptable solution,
as most of our customers use automatic update of Outlook.
Any better solutions?