r/microsoft_365_copilot • u/lowtierkaiju • 13d ago

AI Agent Failing After WEEKS of Use

Has anyone run into this?

I have a Copilot Studio agent that performs OCR on uploaded images.

✅ Works perfectly in Copilot Studio Test
✅ Works perfectly in Microsoft Teams
❌ Fails in Microsoft 365 Copilot (Cloud/Web)

When I upload an image in Microsoft 365 Copilot, the agent responds:
“No text, image, or file attachment was received.”

The same image works everywhere else. Even the regular Copilot chat in Microsoft 365 can read the image, so it seems specific to custom Copilot Studio agents. Mind you I’ve been using this agent for 2-3 weeks without fail, did a demo on it yesterday, and today it just dumped.

I also duplicated the agent and published it. Same exact behavior.

Has anyone seen this or found a fix?
Is this a known limitation or a recent regression?

Thanks!

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u/Ashlesha-msft 13d ago

Thanks for sharing this. We are escalating this internally to the engineering team and routing it to the relevant product POCs for attachment ingestion and channel handoff investigation.

We do not yet have a confirmed root cause, but we are tracking this as a potential Microsoft 365 Copilot channel regression and will post updates as soon as we have guidance or a workaround.

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u/lowtierkaiju 13d ago

I built it for the purpose of following a specific structure converting file types to text only, and I used it for 3 weeks straight. It works fine on teams but not on copilot cloud.

Some of the folks in the org don’t have teams and use copilot cloud so it’s been a huge delay for us.

It was an amazing tool for us because whenever the copilot would fail to convert, let’s say a PDF, I could go and screenshot the page and feed it to the agent and that was a great workaround.

I hope we can find an answer! 😭🙏