I am getting 'adodb.connection error '800a0e7a' provider cannot be found. it may not be properly installed' error

Databases > MS Access
This is often caused by attempting to connect to an Access database using OLE-DB (e.g. Provider=Microsoft.Jet.OLEDB.3.51;) without having JET components installed.

Microsoft.Jet.OLEDB.3.51 is a very old version, and we have Microsoft.Jet.OLEDB.4.0 installed on our servers, in order to fix the error, please update

Provider=Microsoft.Jet.OLEDB.3.51  to Provider=Microsoft.Jet.OLEDB.4.0 from your database connection string.