Exception:
Test connection failed: Tooling instance is not available
Reason:
org.mule.tooling.client.startup.Tooling NotAvailableException: Tooling instance is not available
Resolution:
1. Go to Windows –> Preferences.
2. Select Tooling.
3. Click Restart Instance.
![](https://www.infallibletechie.com/wp-content/uploads/2019/10/Tooling2Binstance2Bavailable2Bissue2Bin2BAnypoint2BStudio.png)