You can configure the existing license by providing the License Server Name and Port Number. By default, Tally.ERP 9 uses 9999 port for communication between the license servers and clients, in case you opt for a different port number, please contact the system or network administrator. To configure the existing license, execute the following steps.
Go to Gateway of Tally or Company Info menu
Press F12:Configure.
Select Licensing > Configure Existing License.
The Configure Existing License screen appears.
Provide the required License Server Name or IP Address in the Tally License Server Field.
By default, Tally.ERP 9 License Services use port 9999 to operate. Provide the required port number, in case you want Tally.ERP 9 license services to use another port for communication.
Accept to save the License Configurations.
Tally.ERP 9 displays a message Do you want to restart Tally.ERP 9 for the changes to have effect?
Press Y or click Yes to effect changes and restart Tally.ERP 9.