Microsoft Outage Affecting Power Automate Connections

Power Automate — Connection Issues During Microsoft 365 Outage 11/12/2026

While attempting a workaround to redirect existing SharePoint notification workflows from Outlook to Teams, the following issues were encountered:

• New Connections: Unable to establish a Microsoft Teams connector connection due to OAuth validation failure.

• Existing Flows: Previously configured SharePoint Get items actions reported invalid connections.

• Connection Management: Options to change or repair connections were unavailable or disabled in the flow designer.

• Impact: Unable to reliably modify or create replacement notification workflows while these connection issues persist.

Error received:

Failed to create OAuth connection: ClientError: Test connection failed. Details: Could not validate the connection

Microsoft Documentation:

• Fix connection failures in cloud flows

• Troubleshoot broken Power Automate connections

• Microsoft Power Platform service health

Current Status: Existing workflows have been preserved. Automated SharePoint-to-Teams notification changes remain blocked pending restoration or resolution of connector authentication issues.

These symptoms occurred during the Microsoft 365 disruption. Their precise root cause has not yet been confirmed.