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PowerApps MCP Server

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Posted on by Muskan30

Getting this error while using PowerApps MCP Server:

{"reasonCode":"RequestFailure","errorMessage":"Connector request failed","HttpStatusCode":"unauthorized","errorResponse":"[{\"jsonrpc\":\"2.0\"}]","mcpMethod":"initialize","connectorId":"/providers/Microsoft.PowerApps/apis/shared_powertools","operationId":"InvokeMCP","dialogSchemaName":"cr5ec_agent4.action.MicrosoftPowerApps-PowerAppsMCPServer"}

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Calling actions from Copilot Studio

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lbendlin 8,716 Super User 2026 Season 1 on at

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the login you are using does not have permissions to interact with the MCP server.

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DP_Prabh 361 on at

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Hi @CU12031210-0,

This error means the PowerApps MCP Server connector request is not authenticated. The request to the connector shared_powertools failed with HTTP 401 Unauthorized, so the MCP server could not initialize.

Why it happens:

The PowerApps connector connection is not signed in or expired

You don’t have permission to the environment/app

The connector connection was not created or selected in the flow/agent

Token/session expired for the Power Platform connector

the MCP call is failing because the connector is not authenticated (401 Unauthorized).

How to fix:

Go to Power Apps / Power Automate → Connections

Find the PowerApps / Powertools connection

Reconnect or create a new connection

Ensure that you have access to the environment and app

Re-run the MCP initialization after refreshing the connection.

I hope this would work! If you have access to that env.

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Prasad-MSFT Microsoft Employee on at

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The error message indicates an authentication issue: "HttpStatusCode":"unauthorized" "Connector request failed"

What this means:
Your MCP Server connector in PowerApps is not authorized to make the request—likely due to missing or invalid authentication credentials.

How to resolve:

Check Connector Authentication:

Ensure the custom connector is configured with the correct authentication type (OAuth2, API key, etc.).
Re-authenticate the connector in PowerApps (edit the connection and sign in again).
Verify Permissions:

Make sure the account used has the necessary permissions to access the MCP Server.
Check MCP Server Settings:

Confirm the MCP Server is accessible from PowerApps and is not blocking requests due to IP restrictions or CORS.
Review API/Endpoint Security:

If the MCP Server uses tokens or secrets, ensure they are valid and not expired.
Test Connection:

Use the “Test” feature in PowerApps for the connector to verify authentication works.

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Muskan30 9 on at

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The problem is resolved.

In case you are facing the same you have to go to manage connections in copilot studio (not in power automate) and then connect it.

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