error while upgrading to EL 5 'Microsoft.Practices.EnterpriseLibrary.Caching ..or one of its dependencies

Question

I have tried to upgarde my Enterprise Library from 4.0.0.0 to 5.0.5.0

I knew the safe way was using NuGet.

I used it, but get this error:

An error occurred creating the configuration section handler for cachingConfiguration: Could not load file or assembly 'Microsoft.Practices.EnterpriseLibrary.Caching, Version=5.0.505.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

Configuration Error




Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. 




Parser Error Message: An error occurred creating the configuration section handler for cachingConfiguration: Could not load file or assembly 'Microsoft.Practices.EnterpriseLibrary.Caching, Version=5.0.505.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)




Source Error: 








Line 8:      <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=4.4.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
Line 9:      <section name="dataConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings, Microsoft.Practices.EnterpriseLibrary.Data, Version=5.0.505.0, Culture=neutral, PublicKeyToken=null" />
Line 10:     <section name="cachingConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Caching.Configuration.CacheManagerSettings, Microsoft.Practices.EnterpriseLibrary.Caching, Version=5.0.505.0, Culture=neutral, PublicKeyToken=null" />
Line 11:     <section name="instrumentationConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Common.Instrumentation.Configuration.InstrumentationConfigurationSection, Microsoft.Practices.EnterpriseLibrary.Common, Version=5.0.505.0, Culture=neutral, PublicKeyToken=null" />
Line 12:     <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" />




Source File: D:\MaM\Server\ClientServices\Dev\ClientService 1.5\Conduit.Mam.ClientService.Service\web.config    Line: 10 




Assembly Load Trace: The following information can be helpful to determine why the assembly 'Microsoft.Practices.EnterpriseLibrary.Caching, Version=5.0.505.0, Culture=neutral, PublicKeyToken=null' could not be loaded.








=== Pre-bind state information ===
LOG: User = CONDUIT-IL\elad.bendavid
LOG: DisplayName = Microsoft.Practices.EnterpriseLibrary.Caching, Version=5.0.505.0, Culture=neutral, PublicKeyToken=null
 (Fully-specified)
LOG: Appbase = file:///D:/MaM/Server/ClientServices/Dev/ClientService 1.5/Conduit.Mam.ClientService.Service/
LOG: Initial PrivatePath = D:\MaM\Server\ClientServices\Dev\ClientService 1.5\Conduit.Mam.ClientService.Service\bin
Calling assembly : (Unknown).
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: D:\MaM\Server\ClientServices\Dev\ClientService 1.5\Conduit.Mam.ClientService.Service\web.config
LOG: Using host configuration file: 
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.
LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind).
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/Temporary ASP.NET Files/root/fb9f9038/ea6afb52/Microsoft.Practices.EnterpriseLibrary.Caching.DLL.
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/Temporary ASP.NET Files/root/fb9f9038/ea6afb52/Microsoft.Practices.EnterpriseLibrary.Caching/Microsoft.Practices.EnterpriseLibrary.Caching.DLL.
LOG: Attempting download of new URL file:///D:/MaM/Server/ClientServices/Dev/ClientService 1.5/Conduit.Mam.ClientService.Service/bin/Microsoft.Practices.EnterpriseLibrary.Caching.DLL.
WRN: Comparing the assembly name resulted in the mismatch: PUBLIC KEY TOKEN
ERR: Failed to complete setup of assembly (hr = 0x80131040). Probing terminated.

my web.config:

I have tried to see with NuGet, what dll dependent with what dll.

I verified and all of the dlls with the right versions are refrenced (installed by NuGet)

I tried DependenciesWallker, but couldn't understand what's missing.

Answer 1

You need to use the actual public key the assemblies were signed with. Just putting NULL will give you a mismatch and a failure to load.

Answer 2

I encountered this exception also. Turns out the configSections section in the web.config was referencing the 4.0 framework. Changing the section to this resolved it for me:

<configuration>
  <configSections>
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=5.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />