: If you lose your unlock key, you can retrieve it by providing your serial number on the TallyHelp Unlock Key Service page.
: Consider reaching out to authorized Tally partners or resellers in your area for personalized support and services. : If you lose your unlock key, you
: Locate and select Tally.ERP 9 Release 6.6.3 (launched July 13, 2020) and click "Install". 2020) and click "Install".