https://help.tallysolutions.com/docs/te9rel60/Licensing/activate_license.htm

Activating Your Tally.ERP 9 License

You need to activate your Tally.ERP 9 license  to use all the features of the product. Activation is a process to validate and authenticate the license. Your product Serial Number, Activation Key, and e-mail ID are required to activate the license.

To activate your Tally.ERP 9 license

1.    Start Tally.ERP 9.

2.    Click A: Activate Your License in the Startup screen, as shown below:

o     If you are a Microsoft Windows standard user, and do not have the required rights, a message appears as shown below:

Click Yes, and enter your computer administrator username and password to restart Tally.ERP 9 with administrator rights.

o     If you have Microsoft Windows administrator rights, a message appears as shown below:

Click Yes, for Tally.ERP 9 to restart with administrator rights.

3.    Enter your Tally.ERP 9 Serial Number, Activation Key, and Administrator e-mail ID, as shown below:

Note: The e-mail ID provided in the License Activation screen is linked to your Tally.ERP 9 Serial Number, and can be used for all further licensing operations, and interactions with Tally Solutions.

4.    Press Enter to activate your license. A confirmation message appears, as shown below:

5.    Press Enter to view the Unlock License screen.

6.    Enter the Unlock Key sent to your e-mail ID in the Unlock License screen, as shown below:

7.    Press Enter to unlock your license. A confirmation message appears once you unlock your license.

On activation, the license details are displayed in the Information Panel.

See also

Activating Tally.ERP 9 Multi-Site Account

Configuring Tally.ERP 9 License

Licensing - FAQ