Windows Azure | Unable to Find Assembly 'Microsoft.IdentityModel'
Have you encountered the following exception when you browse to your application running on Windows Azure platform.
Unable to find assembly 'Microsoft.IdentityModel, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'
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Cause: The Windows Identity Foundation assemblies are not properly installed to the Windows Azure virtual machine.
Resolution: Use a startup task to reinstall the Windows Identity Foundation package on the virtual machine.
1. Download the WIF.msu file from this link : https://www.microsoft.com/download/en/details.aspx?displaylang=en&id=17331
Windows6.1-KB974405-x64.msu (Windows Server 2008 R2) for osFamily ="2"
Windows6.0-KB974405-x64.msu (Windows Server 2008) for osFamily ="1"
2. osFamily property can be set in serviceconfiguration file.
osFamily="2" - Specifies the OS family that is substantially compatible with Windows Server 2008 R2.
osFamily="1" - Specifies the OS family that is substantially compatible with Windows Server 2008 SP2.
Please refer this link: https://msdn.microsoft.com/en-us/library/windowsazure/ee758710.aspx
3. Add the WIF.msu to your project and set “Copy to Output Directory Always” to “Copy Always”.
Run a MSU update package using the following startup task.
Note : Use Windows6.1-KB974405-x64.msu package if you specify osFamily="2"
Use Windows6.0-KB974405-x64.msu package if you specify osFamily="1"
(RegisterDLL.cmd and set copy local = true)
@echo off
sc config wuauserv start= demand
wusa.exe "Windows6.1-KB974405-x64.msu" /quiet /norestart
sc config wuauserv start= disabled
exit /b 0
4. Add the below script in the serviceDefinition file.
<Startup>
<Task commandLine="RegisterDLL.cmd" executionContext="elevated" taskType="simple" />
</Startup>
Deploy the package on windows Azure platform.
Do a remote desktop to the VM and you will notice that "Microsoft.IdentityModel" assembly is available in GAC.
Refer the below link :
https://msdn.microsoft.com/en-us/library/windowsazure/hh403974.aspx
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