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

every thing work fine locally but this error occurs when I publish it:

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

and stack trace

[InvalidOperationException: The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine.]
System.Data.OleDb.OleDbServicesWrapper.GetDataSource(OleDbConnectionString constr, DataSourceWrapper& datasrcWrapper) +1027372
System.Data.OleDb.OleDbConnectionInternal..ctor(OleDbConnectionString constr, OleDbConnection connection) +337
System.Data.OleDb.OleDbConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) +86
System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup) +31
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +76
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +126
System.Data.OleDb.OleDbConnection.Open() +43
System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +123
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +319
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) +92
System.Web.UI.WebControls.SqlDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments) +1618
System.Web.UI.WebControls.ListControl.OnDataBinding(EventArgs e) +97
System.Web.UI.WebControls.ListControl.PerformSelect() +34
System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +74
System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() +66
System.Web.UI.WebControls.ListControl.OnPreRender(EventArgs e) +29
System.Web.UI.Control.PreRenderRecursiveInternal() +103
System.Web.UI.Control.PreRenderRecursiveInternal() +175
System.Web.UI.Control.PreRenderRecursiveInternal() +175
System.Web.UI.Control.PreRenderRecursiveInternal() +175
System.Web.UI.Control.PreRenderRecursiveInternal() +175
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2496

I am using MS access 2007 database and this my connection string within web.config

        <add name="ConnectionString" connectionString="Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|\OmanLegalDB.accdb;Persist Security Info=True" providerName="System.Data.OleDb"/>

any suggestions for this problem

Answers


For version 12.0 you need to install MDAC 2010 from here.

This has to be done on the server where you publish your application. You need to install the x86 version if the target machine is 32 bit or the x64 version if the target machine is 64 bit and your application is built with configuration Any CPU.


As suggested in here You need to change the Solution Platform from "Any CPU" to "x86".


Your connection string is right so this error could be caused by following reason:

  • If your Office is 32 bit on a 64bit machine and MDAC driver installed is 64bit. In this case you would need to install 32bit MDAC driver to match 32bit Office binaries.

This post has detailed info on how to troubleshoot it.


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