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Editorial Team
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Asked: 2026-05-17T22:03:37+00:00

Exising .net 2 app migrated to .net 4 and moved to an IIS7 Windows

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Exising .net 2 app migrated to .net 4 and moved to an IIS7 Windows 2008 R2 server.

We used to be able to run some code on the web page to export some stuff to excel.

Now, when we do… we get the following error:

The machine-default permission settings do not grant Local Activation permission for the COM Server application with CLSID {00024500-0000-0000-C000-000000000046} and APPID
Unavailable to the user d”omain\username” SID (S-1-5-21-2084383492-816144152-925700815-4150) from address LocalHost (Using LRPC). This security permission can be modified using the Component Services administrative tool.

Any thoughts?

I did wonder if it may be to do with the authenticated user being on a different domain to the webserver – where we see this error??

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1 Answer

  1. Editorial Team

    Restarted the web server and this error no longer appears… I get another error when I try and do the workbook save… I’ll post another question on that.

    Thanks for your help

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