https://help.tallysolutions.com/docs/te9rel60/Control_Centre/Surrender_License_from_Control_Centre.htm

Surrendering License from Control Centre

You can surrender your license from the Control Centre under any one of the following circumstances:

     The computer with Tally.ERP 9 installed has crashed.

     The hard disk was formatted without surrendering the license.

     License was surrendered offline.

To surrender the license from the Control Centre

1.    Press Ctrl+K from Gateway of Tally to view the Remote Tally.NET User Login.

2.    Enter the account or site administrator e-mail ID and password to login to Control Centre.

3.    Select the required Account.

4.     Click L: Licensing and Configuration.

5.    Click I: License Management to view the Licensing and Configuration screen.

6.    Select the required Site for which the license has to be surrendered.

7.    Set the Status as Surrendered, as shown below:

8.    Press Enter to surrender the license.

See also

Surrendering Tally.ERP 9 License

Login to Start Control Centre

Licensing and Configuration

Licensing and Configuration for Multi Site