https://help.tallysolutions.com/docs/te9rel64/Licensing/Uninstalling_Tally.ERP_9.htm

Uninstalling Your Tally.ERP 9

You can uninstall Tally.ERP 9 to discontinue using the application. Uninstallation may also be required when an error occurs, and you need to reinstall.

To uninstall Tally.ERP 9

1. Go to Tally.ERP 9 installation folder in your computer.

2. Double-click the Setup.exe icon.

3. Click Uninstall .