Error Code 402

This error occurs when Tally.ERP 9 is unable to connect to the configured Tally Gateway Server and Port.

Possible Reason for Failure

●      If the Windows Firewall is blocking Tally.ERP 9, Tally Gateway Server, or both, this error may occur.

Possible Solutions

●      Allow Tally.ERP 9 and Tally Gateway Server through Windows Firewall. Click here, to know how to allow any application through Windows Firewall.

After you have resolved the network issue you can:

●      Retry, or

●      Reconfigure your existing license.