Have a look at:
https://status.cloud.microsoft/
User impact: Users may not receive responses to their Microsoft Copilot queries and instead receive an error message. More info: Users may receive an "I'm sorry, I'm having trouble responding to requests right now. Let's try this again in a bit." error message when submitting queries to Microsoft Copilot. Current status: We've confirmed that a recent change to our network infrastructure resulted in connection issues, leading to impact. We're working on rolling back this change to resolve the issue and in tandem continue our work to provision additional capacity to help mitigate impact.