After activating your Tally.ERP 9 license, you need to unlock it using the Unlock Key sent to your e-mail ID.
To unlock your Tally.ERP 9 license
1. Right-click tally.exe, and select Run as Administrator.
2. Click N: Unlock License in the Startup screen. Alternatively, click F12: Configure > Licensing > Unlock License.
3. Enter the Unlock Key sent to your e-mail ID. The Unlock License screen appears as shown below:
4. Press Enter to save. A confirmation message appears after you unlock your license.
Your license is now activated, and the license details are displayed in the Information Panel.