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Editorial Team
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Asked: 2026-06-11T01:10:55+00:00

I want to load xls and xlsx file in c#. For xls I’m using:

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I want to load xls and xlsx file in c#.
For xls I’m using: Provider=Microsoft.Jet.OLEDB.4.0;Data Source=;Extended Properties=\”Excel 8.0;HDR=YES\
For xlsx : Provider=Microsoft.Ace.OLEDB.12.0;Data Source=;Extended Properties=\”Excel 12.0;HDR=YES\
once the projects platform target was Any Cpu
I can upload xlsx file without problem but when I upload xls file I got the following error:
“The ‘Microsoft.Jet.OLEDB.4.0’ provider is not registered on the local machine.”

And if I change the Platform Target to x86 then xls file is uploaded without problem but
this time xlsx file is giving this error:
“The ‘Microsoft.Ace.OLEDB.12.0’ provider is not registered on the local machine.”

How can I upload but file formats without error?

Thanks

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1 Answer

  1. Editorial Team

    You should use ACE.OleDB for both types of files.

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