Power Platform Community Forum Thread Details

Topic Action Management connection failure - "Something went wrong"

When creating a copilot agent in copilot studio, i am using onedrive for business connectors inside the topics to provide folder reading and file retrieval functionality.

This was working fine up until the other day when suddenly the connection management page failed when i added a new connection

When testing the agent in studio all i get is "Something went wrong" (pictured)

this seemed to occur after i added an excel for business connector, but the problem persists after clearing the connector and even after deleting all connectors in the power automate admin panel.

Users running this agent on teams have the ability to connect but it fails at a later connector and i cant seem to figure out which, i suspect a stale connection but cannot source it due to not being able to see the page

i have cleared browser cache, cookies etc and tried deleting and rebuilding the nodes that require the connection to no avail

i have flows in power automate running the same connectors that are called from my flow that work fine, it is just in the copilot editor that this does not work

thanks,

calum

Categories:

Authentication

You are seeing a "Something went wrong" error when using connectors like OneDrive for Business or Excel in Copilot Studio. This started after adding a new connector and persists even after deleting all connections.

Make sure Excel files are stored in OneDrive for Business or SharePoint, not local or unsupported locations.
Only use files and folders owned by the connected user account. Shared or cross-user drives do not work with OneDrive connector.
Allow third-party cookies in your browser. Disable any browser settings or extensions that block cookies.
Turn off pop-up blockers or add an exception for copilotstudio.microsoft.com.
If using Excel connector, make sure tables are properly defined in the Excel file.
In Excel Online, select the table and name it from the Table Design tab. Copilot cannot read from unnamed ranges.
Delete and re-add your connection. Use a clean browser or InPrivate window to avoid stale session issues.
If agent runs in Teams but fails during connector calls, test each topic with connector step-by-step to find the failing one.
If Copilot Studio connection screen still shows error, go to Power Automate > Data > Connections and delete connections there.
After cleanup, open Copilot Studio > Settings > Connections and re-authenticate.
If issue continues, test in a different tenant or ask admin to check for DLP policy conflicts in Power Platform Admin Center.

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