Cloud Flow not triggering on "When a new email arrives (V3)" for Office 365 Outlook

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Posted on by IL-29060506-0

Hi everyone,

I’m facing a strange issue where my automated cloud flow completely refuses to trigger, and the 28-day run history remains completely empty.

Here is what I have configured and verified so far:

The Flow: A simple setup using Office 365 Outlook (When a new email arrives V3) -> For each -> Get Attachment (V2) -> OneDrive for Business (Create file).
The Parameters: Folder is set to Inbox (tried to leave empty), and Only with Attachments is set to Yes.
The Connections: All connections to my Work/School account (@mydomain.com) are fresh, valid, and showing green checkmarks.
The Status: The flow is explicitly Turned On.

I have also tried using the official, ready-made templates provided inside Power Automate for this exact purpose, but experienced the same issue.

The Problem:
When I send a test email with an attachment from an external Gmail account and other Outlook account, the email arrives in my Outlook Inbox perfectly, but the flow does not trigger at all. Even when I run a Manual Test, the flow just sits on the "To see it work, now send a new email..." loading screen indefinitely and never registers the incoming mail.

As a Global Admin for our tenant, I have already verified that:

There are no Data Loss Prevention (DLP) policies restricting these connectors.
Under Microsoft Entra ID Conditional Access, the sign-in logs (both interactive and non-interactive) show Success (Not Applied) for my account, so it’s not an MFA or device block issue.

It seems like the Webhook subscription between Exchange Online and Power Automate is completely broken for this account. Has anyone experienced this ghost behavior before? Any advice on how to force-reset the trigger connection at the tenant level?

Thanks in advance!

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VI-07051616-0 15 on at

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Try to remove "Only with Attachments".

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manuelstgomes 6,643 on at

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Hi @IL-29060506-0

This could be a lot of things. I go into detail here but it could be:

- The suggestion from @V.-08100327-0 about "Only with Attachments".

- Filter in the trigger – you could be triggering by subject, to, from, etc. Check also the trigger conditions in the settings because there could be something there.
- I know you mention the "Inbox," but check as well if the folder you're checking is the "Inbox" and didn't change it by mistake.

Also, be aware that the trigger will not trigger right away. Depending on your tier, it could trigger faster or slower, so take this into consideration.

I can't see the screenshot because of the security scan, but if you can share some more information, it would help a lot.

Thanks!

Manuel

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David_MA 14,956 Super User 2026 Season 1 on at

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Please insert an image of the configured trigger action into your post. Attachments to posts tend to never get released so that we can see them. As a first step to troubleshooting, I would suggest deleting the current trigger and adding it again with just the default settings to make sure it triggers for any e-mail you get. Then start adjusting the settings one-by-one and test the flow by sending yourself a new e-mail to meet the requirements of the setting.

Are the e-mails being directed to a subfolder within your in-box? If so, you need to choose the subfolder in which they arrive. If you choose in-box, the flow only triggers on the in-box.

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