error in assemblyBuilder when moving from Win7 to Win10

Question

HI,

I am migrating a from Win7 to WIN10 in VS2015 using .net35SP1. The project runs fine on Win7 but on Win10 it give a runtime error of "Strong name key container not found."

I have searched around some and have tried solutions suggested before including installing Microsoft.Net.Compilers package 2.6.1 and adding <Features>$(Features);UseLegacyStrongNameProvider</Features> to the <PropertyGroup> in the project file. Is anyone able to tell me what needs to be done in order for this to work at runtime once again.

assemblyFileName = String.Format("Company.Configuration.{0}.v{1}.dll", fileName, fileVersion);

            // Define the assembly's name
            var an = new AssemblyName
            {
                Version = new Version(assemblyVersion),
                Name = ns
            };

            // Sign the assembly
            if (!String.IsNullOrEmpty(keyPairFile))
            {
                // Get the KeyPair file to sign the assembly
                StrongNameKeyPair kp;
                using (var fs = new FileStream(keyPairFile, FileMode.Open, FileAccess.Read, FileShare.Read))
                {
                    kp = new StrongNameKeyPair(fs);
                }
                an.KeyPair = kp;
            }

            // Define a new assembly that we can save to disk
            var assemblyBuilder = Thread
                .GetDomain()
                .DefineDynamicAssembly(an, AssemblyBuilderAccess.RunAndSave
                );

...

            // Save the dll
            assemblyBuilder.Save(assemblyFileName);

Answer 1

are you sure your keyPairFile contains the private key?
perhaps you enabled verification skipping (sn -vr) on your Windows 7 system, but forgot to do this on the new system (been there, done that)

Answer 2

I tried creating a new key on a Win10 machine just in case it was machine specific. That had no effect either.

Answer 3

Hi wizardkalor,

Thank you for posting here.

Could you provide more details about your exception with which line of the code thrown the exception?

Besides, hope the following reference could be helpful.

Why do I lose my key container when I reboot?

Best  Regards,

Xingyu Zhao

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Answer 4

The very last line in the posted code (assemblyBuilder.Save(assemblyFileName)) is the line of code where the error occurs.

Answer 5

Maybe we are not using this correctly either.

The project file contains no line like <KeyContainerName>MyKeyName</KeyContainerName> like in the link provided by Xingyu Zhao.


instead we have <AssemblyOriginatorKeyFile>KeyFile.snk</AssemblyOriginatorKeyFile>

Answer 6

Not really a fix but the error goes away if i remove this code from what was originally posted.

			if (!String.IsNullOrEmpty(keyPairFile))
			{
				// Get the KeyPair file to sign the assembly
				StrongNameKeyPair kp;
				using (var fs = new FileStream(keyPairFile, FileMode.Open, FileAccess.Read, FileShare.Read))
				{
					kp = new StrongNameKeyPair(fs);
				}
				an.KeyPair = kp;
			}

Answer 7

Hi wizardkalor,

As mentioned in the reference, have you tried to delete the key container and create a new one?

Sn.exe (Strong Name Tool)

Best Regards,

Xingyu Zhao

---

MSDN Community Support
Please remember to click "Mark as Answer" the responses that resolved your issue, and to click "Unmark as Answer" if not. This can be beneficial to other community members reading this thread. If you have any compliments or complaints to MSDN Support, feel free to contact [e-mail].

Answer 8

Yes, we have deleted and created a new strong name key and still received the same error.

Answer 9

Hi wizardkalor,

There may be other possible causes of this error, I afraid that it may related to windows 10.

To help you find a solution, you can report a problem in Developer Community for more help.

Thank you for your understanding.

Best Regards,

Xingyu Zhao

---

MSDN Community Support
Please remember to click "Mark as Answer" the responses that resolved your issue, and to click "Unmark as Answer" if not. This can be beneficial to other community members reading this thread. If you have any compliments or complaints to MSDN Support, feel free to contact [e-mail].