Problem Accessing Excel File from ASP.NET Application

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Windows Server 2008 R2. ASP.NET 4.0, Excel 2013. My problem is to programmatically open and access one Excel file stored somewhere in the server. Tried DCOM and IIS permission settings.

Exact Error:
Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80070005 Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)).

Posted 9-Jun-14 5:27am

Mr.Sourav.Maitra

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 9-Jun-14 13:21pm

Is Excel installed on the server?

Mr.Sourav.Maitra 10-Jun-14 7:31am

Yes, it is.

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 10-Jun-14 7:39am

See my answer.

DamithSL 9-Jun-14 13:36pm

have you set the read permission to IIS_IUSRS or your asp.net site app pool user to your excel file stored folder?

Mr.Sourav.Maitra 10-Jun-14 7:31am

Yes, that is done

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Answer 1 · 2014-06-10T01:39:00

Check the below answers. They might help you. Follow the instructions.

1. “Retrieving the COM class factory for component… error: 80070005 Access is denied.” (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))[^]
2. Retrieving the COM class factory for component with CLSID failed due to the following error: 80070005 access is denied[^]

Kornfeld Eliyahu Peter · Answer 2 · 2014-06-09T07:41:00

By default web site has a user assigned to it with minimal right, just for running the site itself. For sure instantiating COM/DCOM object is forbidden. And I do not advise you to change the users rights...
In any case you approach seems to me wrong from the beginning. Microsoft offers the VSTO[^] package to handle office files from code, even without Office installed! Go and learn it, than use it for your web application!

Problem Accessing Excel File from ASP.NET Application

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