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Asked: 2026-05-11T22:16:04+00:00

I can’t open an Excel spread sheet with .NET on an x64 server using

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I can’t open an Excel spread sheet with .NET on an x64 server using the following connection string

“Provider=Microsoft.Jet.OLEDB.4.0; Data Source=” + filePath + “; Extended Properties=Excel 8.0;”

I get The ‘Microsoft.Jet.OLEDB.4.0’ provider is not registered on the local machine.

I installed the 2007 Office System Driver: Data Connectivity Components and tried with Microsoft.ACE.OLEDB.12.0 and this connection string

“Provider=Microsoft.ACE.OLEDB.12.0; Data Source=” + filePath + “; Extended Properties=Excel 8.0;”

and got “The ‘Microsoft.ACE.OLEDB.12.0’ provider is not registered on the local machine.”

I searched Google with the only response being it’s a 64 bit problem, anyone have an Idea how to fix this?

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1 Answer

  1. Editorial Team

    The Excel 2003 / 2007 OleDB drivers are 32 bit only. My understanding is that you can only use them in a 32 bit application.

    SpreadsheetGear for .NET will open xls and xlsx workbooks and it is tested and supported in 64 bit as well as 32 bit .NET 2.0+.

    You can download the evaluation here and see live ASP.NET samples (C# & VB) here.

    Disclaimer: I own SpreadsheetGear LLC

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