The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine.

2021년도에 Microsoft.ACE.OLEDB.12.0 제공자를 다루게 되는군요. ^^;

우선, 해당 제공자는 기본적으로 설치되어 있지 않기 때문에 관련 프로그램을 실행하면 다음과 같은 예외가 발생합니다.

System.InvalidOperationException: The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine.
   at System.Data.OleDb.OleDbServicesWrapper.GetDataSource(OleDbConnectionString constr, DataSourceWrapper& datasrcWrapper)
   at System.Data.OleDb.OleDbConnectionInternal..ctor(OleDbConnectionString constr, OleDbConnection connection)
   at System.Data.OleDb.OleDbConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject)
   at System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup, DbConnectionOptions userOptions)
   at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
   at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
   at System.Data.ProviderBase.DbConnectionInternal.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
   at System.Data.OleDb.OleDbConnection.Open()
   at ConsoleApp1.Program.Main(String[] args)

C# - 오피스 엑셀 97-2003 .xls 파일에 대해 32비트/64비트 상관없이 접근 방법
; https://www.sysnet.pe.kr/2/0/11329

Access DB에 대한 32bit/64bit OLE DB Provider 관련 오류
; https://www.sysnet.pe.kr/2/0/1036

System.Data.OleDb.OleDbException
  HResult=0x80040E10
  Message=No value given for one or more required parameters.
  Source=System.Data
  StackTrace:
   at System.Data.OleDb.OleDbCommand.ExecuteCommandTextErrorHandling(OleDbHResult hr)
   at System.Data.OleDb.OleDbCommand.ExecuteCommandTextForSingleResult(tagDBPARAMS dbParams, Object& executeResult)
   at System.Data.OleDb.OleDbCommand.ExecuteCommandText(Object& executeResult)
   at System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method)
   at System.Data.OleDb.OleDbCommand.ExecuteReader(CommandBehavior behavior)
   at System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
   at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
   at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable)
   at ConsoleApp1.Program.Main(String[] args)

  This exception was originally thrown at this call stack:
    System.Data.OleDb.OleDbCommand.ExecuteCommandTextErrorHandling(System.Data.OleDb.OleDbHResult)
    System.Data.OleDb.OleDbCommand.ExecuteCommandTextForSingleResult(System.Data.OleDb.tagDBPARAMS, out object)
    System.Data.OleDb.OleDbCommand.ExecuteCommandText(out object)
    System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(System.Data.CommandBehavior, string)
    System.Data.OleDb.OleDbCommand.ExecuteReader(System.Data.CommandBehavior)
    System.Data.Common.DbDataAdapter.FillInternal(System.Data.DataSet, System.Data.DataTable[], int, int, string, System.Data.IDbCommand, System.Data.CommandBehavior)
    System.Data.Common.DbDataAdapter.Fill(System.Data.DataSet, int, int, string, System.Data.IDbCommand, System.Data.CommandBehavior)
    System.Data.Common.DbDataAdapter.Fill(System.Data.DataSet, string)
    ...
    [Call Stack Truncated]