Typical Error Message:
System.Diagnostics.DiagnosticSource
System.IO.FileLoadException: 'Could not load file or assembly
'System.Diagnostics.DiagnosticSource, Version=6.0.0.0, Culture=neutral,
PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies.
The located assembly's manifest definition does not match the assembly reference.
(Exception from HRESULT: 0x80131040)'System.Runtime.CompilerServices.Unsafe
System.IO.FileLoadException: 'Could not load file or assembly
'System.Runtime.CompilerServices.Unsafe, Version=4.0.4.1, Culture=neutral,
PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies.
The located assembly's manifest definition does not match the assembly reference.
(Exception from HRESULT: 0x80131040)'
How To Fix
At Windows File Explorer, open the file “<project-name>.csproj“.
Go to the Reference section, you will find something like this:
<Reference Include="System.Diagnostics.DiagnosticSource, Version=7.0.0.2, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
<HintPath>..\packages\System.Diagnostics.DiagnosticSource.7.0.2\lib\net462\System.Diagnostics.DiagnosticSource.dll</HintPath>
</Reference>
<Reference Include="System.Runtime.CompilerServices.Unsafe, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
<HintPath>..\packages\System.Runtime.CompilerServices.Unsafe.6.0.0\lib\net461\System.Runtime.CompilerServices.Unsafe.dll</HintPath>
</Reference>Obtain the version number and PublicKeyToken, such as:
System.Diagnostics.DiagnosticSource
- Version:
7.0.0.2 - PublicKeyToken:
cc7b13ffcd2ddd51
System.Runtime.CompilerServices.Unsafe
- Version:
6.0.0.0 - PublicKeyToken:
b03f5f7f11d50a3a
Edit the file web.config, and fill in the version number and publicKeyToken into the following lines:
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="System.Diagnostics.DiagnosticSource" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-7.0.0.2" newVersion="7.0.0.2" />
</dependentAssembly>
</assemblyBinding>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="System.Runtime.CompilerServices.Unsafe" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
</dependentAssembly>
</assemblyBinding>
</runtime>The assembly binding block format:
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="...assembly name..."
publicKeyToken="...public key token..." culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-version number"
newVersion="...version number..." />
</dependentAssembly>
</assemblyBinding>
</runtime>