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Warning "Application is trying to send messages on your behalf" in Outlook

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Posted on by TAKO

Hello,

I have the following problem with my Power Automate Desktop Flow in the step "Send e-mail message via Outlook" on my virtual server.
There is no virus protection program installed on my virtual server and I cannot install one.
If I open Outlook as admin and adjust the setting under Options > Trust Center > so that no warning message appears, the flow works and the email is sent.
However, this setting is regularly changed (possibly by the group policy?) so that warnings appear again. The flow cannot handle this warning and then aborts. In the flow, I can neither grab the window that appears with the warning and click away via Power Automate, nor set the Trust Center settings automatically.
How can I solve the problem so that the correct Trust Center settings (do not display a warning) are always stored? Or maybe there is another method?

2024-05-21 16_14_26-Dokument1 - Word.png

2024-05-21 16_14_01-Dokument1 - Word.png

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TAKO 19 on at

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I have also tried to set the settings with the registry file with " ObjectModelGuard", but it doesn't worked to set the settings in Trust Center. (restarted outlook and server and still didn't changed the settings)
https://learn.microsoft.com/en-us/outlook/troubleshoot/security/a-program-is-trying-to-send-an-email-message-on-your-behalf#resolution-method-2---change-the-programmatic-access-security-setting-in-the-registry

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CU31080729-3 502 Moderator on at

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Hi @TAKO,
I facing same issue as you mention , this kind of issue not able to automate. I have weekly check (manually) the setting of outlook and check the radio button is check (never warn the message).
if any one from community got solution for that let me know.

(Note:- if you got your solution you can mark as solution and gives kudos)

Thanks & Regards
Chetan Ninghot

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AK88 453 on at

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Hi @TAKO & @Chetan_Ninghot ,

I also faces same issue, each time open outlook as admin and change to never warns , it will work for some days, but later again same issue popups. Let us know if anybody has the best solution to resolve.

thanks,

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