Outlook 365 - Security Warning

Question

Hi,

I have a outlook 365 client installed into server 2016, and have a internal program to read email from the outlook client.

Whenever the program read a new email from outlook will pop up the warning message below. Is there have way to disable the warning?

I did tried to disabled the "Never warn me about suspicious activity" from the Programmatic Access under Trust Center.

Please advise how to disable the outlook warning message.

Thank you!

Answer 1

What happens if you try to disable it? Was it grayed out?

See on the different ways to resolve that here:
https://www.msoutlook.info/question/883

If its disabled by Policy, then you will need to talk to whomever supports Exchange/Outlook/Group Policies in your org.

Answer 2

If you are using Office 365 Click to Run, see this article for the correct registry entries versus the "legacy" MSI registry requirements

https://support.microsoft.com/en-us/help/3189806/a-program-is-trying-to-send-an-e-mail-message-on-your-behalf-warning-i

Answer 3

Your issue can be caused by any untrusted and malicious programs which may use Outlook to spread viruses. Please check if you install any third-party software or add-ins before this issue, and you can disable them temporarily to see whether this warning still pops up.

Microsoft provides Windows Defender Antivirus to provide real-time protection. Make sure you are using the latest Security intelligence. If you use other antivirus software, please also make sure you have installed the latest update. For your reference: I get warnings about a program accessing email address information or sending email on my behalf.