You need to add Tally.ERP 9 program files to the exception list of Windows 7 firewall to allow Tally.ERP 9 to send information to or from your computer through the Windows Firewall. To add Tally.ERP 9 files to the exception list of Windows 7 firewall 1. Go to Control Panel > System and Security > Windows Firewall . 2. Click Advanced settings . The Windows Firewall with Advanced Security on Local Computer screen is displayed. 3. Click Inbound Rules . 4. Click New Rule (right-hand side) under Actions of Inbound Rules. The Rule Type screen appears. o Select Program and click Next . The New Inbound Rule Wizard screen appears as shown below: o Select This program path . o Click Browse to search for the program files in your local system. o Click Next . The Action screen is displayed to specify action for the rule. o Select Allow the connection . o Click Next . The Profile screen is displayed to specify the profile for which this rule applies. o Select the required options. o Click Next . The Name screen is displayed to specify the name and description of the rule. o Enter the Name for the rule and specify the description under Description (optional) , if required. The New Inbound Rule Wizard screen appears as shown below: 5. Click Finish . The Inbound Rules list displays the new rule created, as shown below: Note: Similarly, add the Tally.ERP 9 program file for the outbound rules by selecting Outbound Rules in the Windows Firewall with Advanced Security screen.