Microsoft.reportviewer.common Version 9.0.0.0 Download

Developers and IT administrators frequently encounter specific issues when dealing with this legacy version:

You are likely here because your .NET application is throwing a FileNotFoundException or a BadImageFormatException. The full error often looks like this:

Could not load file or assembly 'Microsoft.ReportViewer.Common, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified. microsoft.reportviewer.common version 9.0.0.0 download

This occurs because:

Even if you have SQL Server 2016 or 2019 installed, the 9.0.0.0 DLL will not be present unless you explicitly install the correct redistributable package. Could not load file or assembly 'Microsoft

Cause: The assembly is missing from the GAC or application's bin folder.

Fix:

There are two primary ways to obtain this specific legacy DLL.

It is important to understand the versioning history, as the version number on the file does not always match the package name: This occurs because:

If you have access to your organization's MSDN or Volume Licensing portal, download the SQL Server 2008 R2 Feature Pack. Within it, locate the Microsoft Report Viewer 2010 Redistributable.

A: Yes. The correct token is fixed for all official Microsoft ReportViewer assemblies. Any different token means the file is tampered with or from a third party. Delete it immediately.