Could not connect to the update site (Error 42015: The proxy name could not be resolved: 'http') occurs when attempting to update TurboTax.
This error occurs if the specified proxy server is invalid or TurboTax is unable to connect using the proxy server.
- Open the Control Panel and select Network and Internet
- Select the Internet Options
- Select the Connections tab and then the LAN settings button
- Clear the Use a proxy server for your LAN checkbox and select OK twice
- Update TurboTax again
If you're still having update problems or can't connect to the internet, repeat the preceding steps, except this time select the box in step 4. Then download a manual update.