HTTPS Constructor Exception

Question

The type initializer for 'hezq' threw an exception. - at hezq.vinp(String brp).

_creator = new HttpRequestCreator();

Answer 1

Hi  lcrmj,
thanks for the info!  I could only guess now that your problem may be related to the support request that was raised few weeks ago.

1) Inner exception is probably SecurityVerificationException.
2) Your client uses version of the .Net 4.5 with well-known bug.

Description of the problem and the hotfix can be found here.

https://support.microsoft.com/en-us/help/2748645/an-update-is-available-for-the-net-framework-4-5-in-windows-7-windows

More info about problem.
https://elegantcode.com/2012/08/23/net-4-5-operation-could-destabilize-the-runtime-yikes/

Comments

Hi renestein,

I can confirm one of our costumers with the issue is using .NET 4.5, don't know about others tho. We told this customer to install the update, he'll get it done by tomorrow. I'll comment again once we get his feedback.

Could you add your comment as an answer so I can mark it as best answer if that's really the issue?

Thank you for your help

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Hi renestein,
Unfortunately it didn't work, the error keeps happening.

Thanks for the help tho!

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Hi lcrmj,
 please see me comment above.

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Thank you a lot. I use this code and finish my task

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Since the update link was taken down we asked our costumer to use .NET 4.5 and it fixed the issue. Thanks everyone!

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Thanks for letting us know!

Answer 2

Comments

Not sure about the inner exception, we got the error from a customer and we can't reproduce it here... to get that info I'll need to build a special version logging it, it's not really a problem to do so if you really think that's necessary but I'd rather not bother our customer if that's possible :p

All dlls are "xxx (2018 R2) for .NET 4.0-4.7" and it's a desktop application.

Could the error be caused by somekind of Windows configuration, firewall or proxy?

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The exception was thrown during initialization of crypto services. It seems that OS on device  of your customer doesn't support some crypto features and we failed to ignore it correctly. It is not related to firewall or proxy.

The inner exception will help us to locate the source of the issue. Please, log the exception like this:

    try
    {
        _creator = new HttpRequestCreator();
    }
    catch (TypeInitializationException ex)
    {
        Log.Write(ex.ToString());
    }

1. I suppose that the exception is thrown always?
2. If you have to create new build, can you please use the latest version 2018 R3 to ensure the issue was not already solved?

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According to their description of the issue, yes, it always happens
Our support team is in touch with one of the customers so we can find the best time to install the special version on his machine, it should happen in the start of next week. I'll get back when we do it.

Thanks for the support so far.

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Managed to get the inner exception
https://pastebin.com/JiuFgVN9

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Hi lcrmj,
thanks for the information.

Just as I suspected, thrown exception is indeed "System.Security.VerificationException: Operation could destabilize the runtime".

Exception message “System.Security.VerificationException: Operation could destabilize the runtime” sounds very creepy. The truth is that we  don’t do any dangerous operation with possibly catastrophic consequences for the runtime.

This enigmatic exception probably has very prosaic reason described above.
Please make sure that you have applied the hotfix.

You can also diagnose the problem using the PEVerify tool.
https://docs.microsoft.com/en-us/dotnet/framework/tools/peverify-exe-peverify-tool

If nothing from the above works and you still experience the problem, I would like to kindly ask you to share minimalistic project, which demonstrates this problem, with us.
Please send us also:

1) .Net Framework version used to compile the application.
2) .Net Framework version used to run the application.
3) Full windows version (output of the command winver).

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Hi renestein,

The link you provided got taken down so the support team installed this one instead https://www.microsoft.com/en-us/download/details.aspx?id=34966, they seem to be referring to the same issue, could you confirm that?

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Hi lcrmj,
your link is broken as well (404). Unfortunately, I could not find the hotfix on Microsoft web/Update catalog. I have found this page (https://www.microsoft.com/en-us/download/details.aspx?id=34966). You can see that the page refers to the KB2748645 on the bottom (section Additional info). I think this is a typo, because hotfix files and top of the page mentions KB2748646.
Please contact Microsoft directly/on MSDN forum.
I think that you don't have patch for SecurityVerificationException installed.
I am sure that few days ago all links worked.:(

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I placed a question on MSDN... no answers so far... :/
Do you know if updating to .Net 4.6 could fix the issue?

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. Net 4.6  is in-place upgrade of. Net, so AFAIK this issue should be fixed.

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Thanks renestein,
All give it a try and come back with the outcome!