How to copy Server Control DLLs to the GAC in Windows to prevent the "404 (File Not Found) error" in Microsoft IIS.
The 404 or Not Found error message is a HTTP response indicating that the server could not find what was requested. In many cases, this is because of an incorrectly formed URL, insufficient access rights to the file, a renamed file, or a deleted file on the server. When using the ASP Barcode Server for IIS or the Barcode Server Controls, a "404 (File Not Found) error" may also be received if the Server Control DLL is not placed in the Global Assembly Cache (GAC). When this is the case, security in IIS will prevent the server from reading the DLL file and cause the error.
The latest versions of IIS may require the Server Control DLL's to be placed in the GAC in addition to the bin folder of the Virtual Directory. To place the DLLs in the Global Assembly Cache, follow these steps:
For more information, refer to the Microsoft Global Assembly Cache Site.
NOTE: In deployment scenarios, use Windows Installer 2.0 or greater to install assemblies into the global assembly cache. Use Windows Explorer only in development scenarios.
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