Could not load file or assembly Microsoft ReportViewer Common Version 11 0 0 0

Question

I recently upgraded my n-tier solution from  NET 3 5 vs 2008 to 4 5 visual studio 2012  Every thing went fine apart from crystal reports and I had to install new runtime crystal reports for visual studio 2012 from the following link http   downloads businessobjects com akdlm cr4vs2010 CRforVS 13 0 5 exe  After installing the above package I had to resolve some deprecated function and properties of  CrystalViewer and after that reports rendering properly in development environment  Windows 7 64 bit  SQL Server 2005  Visual Studio 2012   When I deployed the package in test environment windows server 2008 R2 the Application failed to load by throwing error  Could not load file or assembly Microsoft ReportViewer WebForms  Version 11  I managed to resolve ReportViewer WebForms error by copying the DLL  from C  Program Files  x86  Microsoft Visual Studio 11 0 ReportViewer to bin folder of solution and set property copylocal   true and deployed the package  After that I received the error Could not load file or assembly  Microsoft ReportViewer Common  Version 11 0 0 0   I tried to search that DLL on my machine but couldn t  when project is running in visual studio  In Debug-  Windows- Module  the file is not listed however in global assembly cache that file is installed but I don t know how its installed to global cache and from where    I found one solution that I had to install ReportViewer msi from microsoft package but if i install this package it asks me to install SQL Server 2012 which I dont wan t  Could any one help me to resolve this issue  Thanks

User · Accepted Answer

You can install the Microsoft Report Viewer 2012 Runtime and change your references so they point to the ones installed by the runtime.

http://www.microsoft.com/en-gb/download/details.aspx?id=35747

I have installed the runtime without it asking for SQL Server 2012. Before installing try uninstalling any previous versions of report viewer.

User · Answer

Dont know if this is good to anyone  but search all these dlls    Microsoft ReportViewer Common dll Microsoft ReportViewer ProcessingObjectModel dll Microsoft ReportViewer WebForms dll Microsoft ReportViewer WinForms dll Microsoft ReportViewer DataVisualization dll   You find them in C  Windows assembly GAC MSIL      and then put them in the references of your project    For each of them say  local copy  and check for 32 or 64 bit solution

User · Answer

I had the same problem for Winforms   The solution for me is   Install-Package Microsoft ReportViewer Runtime Winforms

User · Answer

In my case  the  Microsoft ReportViewer Common dll  assembly is not required for my project  so I simply removed all references  Project -  Add Reference    -         all requirements from Publish tab the VS2013 removed automatically  and all works properly

User · Answer

I resolved this problem  searching the dll s file in C  Windows assembly GAC MSIL  and copied to bin directory of the proyect deployed  That work for me

User · Answer

As Microsoft ReportViewer 2012 Runtime has Microsoft ReportViewer WebForms  Microsoft ReportViewer Common and Microsoft ReportViewer ProcessingObjectModel libraries  just run this command on PM Console           Install-Package Microsoft ReportViewer 2012 Runtime   Note   If you want to completely remove the old Microsoft ReportViewer xxx references  you can remove them from Manage NuGet Packages Installed Packages menu and then remove the related lines from packages config file in your project  After that it will not comeback again during building of the project    Hope this helps

User · Answer

Simply install Microsot ReportViewer 2012 Runtime nuget package as shown in this answer https   stackoverflow com a 33014040 2198830

User · Answer

You can download the nuget package too

User · Answer

I Had the same problem   The solution for me is   You must have the same version of  Microsoft ReportViewer ProcessingObjectModel registred in C  Windows assembly GAC MSIL Microsoft ReportViewer ProcessingObjectModel  like you have registraded in web config in developer server     In my case i was only registred the 13  version in my prodution server and i have the 12  version in developer server   the solution is install the version 12  in the prodution server too  the version 12      https   download microsoft com download A 1 2 A129F694-233C-4C7C-860F-F73139CF2E01 ENU x86 ReportViewer msi  Then now i have the version 12  in the prodution and the report work fine       Remember to reset your IIS after instalation

User · Answer

Add Microsot ReportViewer 2010 or 2012 in prerequisite of setup project then it first install Report Viewer if it s not present in  C  Windows assembly GAC MSIL     and after installing  it installs set up project

User · Answer

I solve it by download the reportviewer exe and install it  After the installation  all related assemblies will be available in C  Windows assembly GAC MSIL  then you can refer it in web config

User · Answer

Could not load file or assembly  Microsoft ReportViewer Webforms  or   Could not load file or assembly  Microsoft ReportViewer Common   This issue occured for me in Visual studio 2015    Reason   the reference for Microsoft ReportViewer Webforms dll is missing   Possible Fix  Step1   To add  Microsoft ReportViewer Webforms dll  to the solution    Navigate to Nuget Package Manager Console as    Tools-- NugetPackageManager-- Package Manager Console    Then enter the following command in console as below  PM Install-Package Microsoft ReportViewer Runtime WebForms  Then it will install the Reportviewer webforms dll in     packages Microsoft ReportViewer Runtime WebForms 12 0 2402 15 lib   Your project folder path   and ReportViewer Runtime Common dll in     packages Microsoft ReportViewer Runtime Common 12 0 2402 15 lib    Your project folder path   Step2 -  Remove the existing reference of  Microsoft ReportViewer WebForms    we need to refer these dll files in our Solution as  Right click Solution  References-- Add reference-- browse    Add both the dll files from the above paths    Step3    Change the web Config File to point out to Visual Studio 2015  comment out both the Microsoft ReportViewer WebForms and Microsoft ReportViewer Common  version 11 0 0 0 and Uncomment both the Microsoft ReportViewer WebForms and Microsoft ReportViewer Common Version 12 0 0 0  as attached in screenshot   Microsoft ReportViewer Webforms Microsoft ReportViewer Common  Also refer the link below   Could not load file or assembly   39 Microsoft ReportViewer WebForms  39

User · Answer

Although rather late  but you can manually download the required DLLs from nuget at the following link  https   www nuget org packages Microsoft ReportViewer Runtime Common 12 0 2402 15  Open the file  Rar Archive  extract the dlls and copy them manually to the bin folder of your publish   This solution worked for me  Hope that helps

[c#] Could not load file or assembly 'Microsoft.ReportViewer.Common, Version=11.0.0.0

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