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Unable to connect service account to Office 365 Outlook connector in power automate

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Posted on by SG-09091339-0

I currently have several flows that send automated emails based on fields in a SharePoint List that are currently using the SendGrid connector. I used this connector because I was unable to connect to the Office365 Outlook connector within Power Automate with a service account. I have been informed that we will be decommissioning the SendGrid connector and I must use the Office365 Outlook connector. I have no issue connecting my company email to the connector but I need to connect a service account with the same domain so that the emails will send through that account and not mine and I am getting the error below when attempting to sign into the connector with my service account.

My IT department has been unable to point me in the correct direction to get this rectified. Has anyone encountered this type of issue? I am assuming that something needs to be adjusted within the settings of the service account but without specifics my IT department has been unable to assist. My initial research seems to keep coming back to activating the service account on Outlook 365 or Microsoft 365. I am not sure if its the same issue but I am also unable to connect this service account to the new Outlook.

Any assistance with finding out what is needed to get this to work would be greatly appreciated.

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wyattdave 488 Moderator on at

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Hi @PowerUser50 ,

Just to confirm that the Service Account has a mailbox that you can access through the browser? The only time I had the same issue was when the account was setup with out Outlook (but Im guessing thats the first thing the IT team would check). My only other thought is if they have added controls to the graph api permissions, as thats what Power Automate uses.

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SG-09091339-0 45 on at

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Hi @wyattdave,

Yes I am able to access the service account via outlook webmail and I was able to add the service account to the old version of Outlook. I am only unable to connect it to the Office 365 Outlook connector in power automate and add it to the new version of outlook.

I will look into the Graph API permissions with our next level IT and see what happens. Thank you for your insight.

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SG-09091339-0 45 on at

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@wyattdave Thank you for the directional push. I spoke with my IT department again and found that our service accounts have recently been migrated to Microsoft 365 but they were not given any permissions to apps... including the new Outlook. The issue was escalated to the team that can fix it so now I am in a holding pattern waiting for that task to be completed.

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