On a newly created agent I've tried to set up Knowledge using AI Search index. I've used the Service Principal connection. and after setting all values and saving it I got an error: Something went wrong Try reloading the page. If the problem persists, contact your admin.
Well, refreshing the page does not help.
Now, with this connection saved in Copilot Studio, accessing the AI Search Connector in Knowledge causes the same error on any agent. So i cannot set up any Azure AI Search based knowledge to any agent.
How to remove this erroneous connection? How to determine what is the error here? I've tried to inspect connections in Settings/Connection Settings of the agent but get: There are no permissions associated with this agent