Access database cannot connect

use .net 6.0 The framework and .net freamwork Two console programs are created , Connect Access database . however .net 6.0 Unable to connect , and .net freamwork Successful connection ..net 6.0 Prompt: no local computer is not installed Microsoft.Ace.Oledb.12.0 Data engine .

in addition , because .net 6.0 There is no System.Data.Oledb Namespace , I downloaded the assembly System.Data.Oledb. To use . Is it because the download is wrong ？
Connection string "provider=Microsoft.ace.oledb.12.0;data source=c:\database2.accdb"