Depending on your operating system and need, here are your options:
If you are working on a legacy machine (Windows XP, Vista, or Windows 7), the Jet 4.0 engine is likely already installed as part of the operating system.
: The Jet OLEDB 4.0 provider was never released as a 64-bit component Stack Overflow Windows Built-in : It is already present in your system's C:\Windows\SysWOW64\ msjet40.dll on 64-bit Windows systems Stack Overflow Deprecated : Microsoft recommends using newer alternatives like Microsoft SQL Server Express for modern development Microsoft Community Hub How to Fix "Provider Not Registered" Errors
Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\db.accdb;
In 2013, Microsoft issued Security Advisory 2718704, announcing that the Jet engine is no longer under active development. Because of security vulnerabilities (remote code execution risks via malformed database files), Microsoft stopped providing Jet 4.0 support for 64-bit operating systems.
