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Strong name signature could not be verified.

Posted By:      Posted Date: October 14, 2010    Points: 0   Category :ASP.Net
Migrated Web Application from .net framework 1.1 to framework 2.0 . We are
getting the following error message on running the application . Error Message
has been below .

Server Error in '/3e' Application.

Could not load file or assembly 'Infragistics.Excel.v4.3' or one of its
dependencies. Strong name signature could not be verified. The assembly may
have been tampered with, or it was delay signed but not fully signed with the
correct private key. (Exception from HRESULT: 0x80131045)
Description: An unhandled exception occurred during the execution of the
current web request. Please review the stack trace for more information about
the error and where it originated in the code.

Exception Details: System.IO.FileLoadException: Could not load file or
assembly 'Infragistics.Excel.v4.3' or one of its dependencies. Strong name
signature could not be verified. The assembly may have been tampered with, or
it was delay signed but not fully signed with the correct private key.
(Exception from HRESULT: 0x80131045)

Source Error:

An unhandled exception was generated during the execution of the current web
request. Information regarding the origin and loc

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User can open this form in his browser, to fill it out and to sign it with his own key/certificate.

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but when this form is opened for verification, SP displays following message:


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The Root certificate of CA that issued user's certificate presents in Trusted Root Certification Authorities store on the SharePoint Server. When the same filled signed form is downloaded to the local file (on SharePoint server PC) and verified with InfoPath application, the signature is valid and verified successfully.


What am I missing and how SP-server verifies certifcation chain?


Thanks in advance,






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