This agent is currently unavailable. It has reached its usage limit. Please try again later.

Hi everyone, I'm currently encountering the following error when trying to use our Copilot agent: "This agent is currently unavailable. It has reached its usage limit. Please try again later."

License: I have a Microsoft 365 Copilot license.

Trigger: The agent is invoked via a Canvas App using the "Execute Copilot" action through the Microsoft Copilot connector (PowerApps Premium).

Prompt Model: GPT-4.1 Behavior

Observed:

• The agent works fine when tested directly in Copilot Studio.
• When triggered from the Canvas App, it works once, then quickly hits the usage limit. After a short cooldown (a couple of minutes), it works again briefly before the error reappears.

Timeline (via conversationId)

9:22 AM – Usage limit reached
9:40 AM – Response successfully generated
9:41 AM – Usage limit reached again
9:47 AM – Response successfully generated
9:49 AM – Usage limit reached again

My Understanding:

• I assumed M365 Copilot licenses offer unlimited usage within M365 apps.
• The agent is not deployed to an external channel, so I didn’t purchase additional Copilot Studio credits.
• Based on documentation, the M365 license should allow up to 8000 responses per minute, which I’m nowhere near.

Questions:

• Is the Canvas App considered an external channel, even if it's internal to our tenant?
• Could this be a hidden throttling limit or a credit consumption mismatch?
• Do I need to purchase Copilot Studio credits even with an M365 license? Is there a way to monitor or log actual credit consumption per session?

Any help or clarification would be greatly appreciated. Thanks in advance!