If you absolutely must have Tally 4.5 for archival purposes, use a virtual machine, scan every file with antivirus software, and never connect that virtual machine to the internet.
Tally 4.5 was designed for MS-DOS or Windows 95/98. It is a 16-bit application. Modern 64-bit versions of Windows (which most computers run today) do not natively support 16-bit applications.
If you absolutely must have Tally 4.5 for archival purposes, use a virtual machine, scan every file with antivirus software, and never connect that virtual machine to the internet.
Tally 4.5 was designed for MS-DOS or Windows 95/98. It is a 16-bit application. Modern 64-bit versions of Windows (which most computers run today) do not natively support 16-bit applications. Download Tally 4.5