If your network uses a proxy server for internet communication, you may receive one or more of the following errors:

• System.Net.WebException: The request failed with an empty response.
• Communication Error The remote server returned an error: (401) Unauthorized.
• System.Net.WebException: The request failed with HTTP status 417: Expectation Failed.

Sync & Save must be able to communicate with the URLs listed in the System Requirements.

By default Sync & Save attempts to detect the proxy server settings configured in Windows (Internet Options | Connections | LAN settings). If you have configured the proxy settings in Windows but continue to receive these errors, then please follow these steps to manually set the Sync & Save proxy settings:

1. Open Tools > Options > System > Proxy
2. Based on the error you are receiving, use the following settings:
   
   System.Net.WebException: The request failed with an empty response.
   Set both the IP Address and Port values to the correct values for your proxy server. The Port must be set to a non zero value.
   
   Communication Error The remote server returned an error: (401) Unauthorized.
   Set the IP Address, Port, User Name and Password values to the correct values for your proxy server.
   
   System.Net.WebException: The request failed with HTTP status 417: Expectation Failed.
   Check the Expect 100 Continue option. This allows the use of older proxy servers that only support HTTP 1.0.
   
   
3. Click OK and test communication. If you continue to receive errors, please turn on Debug Mode, attempt the test again and then send the logs to support.