1. Check Connection References
Start by confirming that your app is still linked to a valid connection reference.
Navigate to Power Apps → Solutions → Your Managed Solution → Connection References.
Make sure the reference is pointing to an active SQL connection. If it looks broken or missing, that’s likely the culprit.
2. Recreate the Connection
If the connection reference is broken, you’ll need to create a fresh one.
Go to your environment and create a new SQL connection.
Once done, update the connection reference in your solution to use this new connection.
3. Verify Authentication
Authentication issues can sneak in, especially if you’re using Azure AD.
Double-check that the SQL user account still has the right permissions.
Review any MFA (Multi-Factor Authentication) or Conditional Access policies—these can block token refresh and break connections.
4. Check Environment Settings
Finally, make sure your environment and connection are in sync.
Confirm that the environment region matches the connection region (e.g., europe-002). A mismatch here can cause unexpected errors.
hope that above will help with your troubleshooting.
