Solving error in HomogenizeErrors() – "Error occurred during a cryptographic operation."

This is a real-edge case of working on the Windows platform. Beware.

Are you getting this stack trace?

“System.Security.Cryptography.CryptographicException: Error occurred during a cryptographic operation.”

Is it working in Internet Explorer but not in any other browser? Then this post is for you.

This assumes you have a certificate that you have installed yourself. All in PowerShell now, you should be able to find it:

It gives me

in my case.

But going to https://induction in FireFox crashes. Now try:

What you need to do in this case, is to re-register the certificate:

$appId is a guid, $tp is the thumbprint (found by doing ‘ls cert:localmachinemy’). The important part here is “certstorename=MY”, because without it, you might get an error in HomogenizingCryptoServiceWrapper.Unprotect – an interesting choice of name for that class for sure.

Now running:

Shows the problem to be solved.

This Post Has 9 Comments

  1. Dude, bailed me out … we had the exact same problem with a ThinkTexture installation and your instructions fixed it for us.

    Thank you and keep posting!
    J

    1. Jamie.. it still doesn’t work!!
      What did you do?

  2. For me the symptom was identical but the solution has been different.

    I followed your instruction all all was OK for me so I analysed the code finding out that the error was thrown by an auto login method trying to decrypt a cookie.

    So I patched my code trapping the exception and deleting the cookie that was no more decryptable forcing the user to insert user/pwd again.

    The error occurred after an important Microsoft update occurred in October 2013 that probably updated some decrypting algorithm.

  3. I develop using Chrome, so when I got this exception I tried IE and it looked fine. What actually resolved it for me was just clearing the cookies in Chrome.

  4. Clearing cookies in Chrome also fixed it for me.

  5. I downloaded a plugin for chrome called EditThisCookie.
    It allowed me to delete the Cookie for JUST that site.

  6. Are you sure you don’t mean ls cert:localmachine/my (note the slash)?

  7. Thank you so much!!! You really help me a lot!!!

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