topic Re: nested asn1 error (_ssl.c:4174) in Fusion Support Forum

nested asn1 error (_ssl.c:4174)

dusandmmilic — Sat, 02 Apr 2022 14:07:43 GMT

Hi,

I have problem with upgrade of my Fusion 360 instalation.

I receive error:

nested asn1 error (_ssl.c:4174)

Does anyone know what does it mean and what I need to do now?

Thank you!

Re: nested asn1 error (_ssl.c:4174)

jodom4 — Mon, 04 Apr 2022 23:27:32 GMT

Hey dusandmmilic,

Have you tried a clean uninstall? It usually works for issues like this one.

Re: nested asn1 error (_ssl.c:4174)

eleonora_sergijevic — Sun, 03 Jul 2022 11:19:30 GMT

Hello Dusan and everybody else from Serbia. I found an easy solution to this problem.

You may fix this one by uninstalling Celik, ID card reader from your computer.

This error differs from 4003, which is solved by erasing MUP certificates.

Apparently, Celik also keeps some certificates in registry, even after you delete them manually.

Figured it by following the process of removing error 4003 and after that I got another error: 4174.

Works like a charm after you uninstall Celik, but I would really prefer that Autodesk engineer the solution that is a workaround those certificates, since a lot of users don't have the patience or skill to remove all MUP certificates from their computers, not that those certificates are temporary, there here to stay.

You also need to uninstall to install Fusion and than install other, vital software again, after installing Fusion to use your computer, which is hardly good user experience. Hope that it will be fixed soon.

In the meantime, this is a solution.

Cheers 🙂

Re: nested asn1 error (_ssl.c:4174)

dedamige — Sat, 25 Feb 2023 18:29:14 GMT

Autodesk made complicated something that should be straight forward, appears that you should have PhD certificate to install Fusion 360...I almost gave up Fusion 360, thanks @eleonora_sergijevic

Re: nested asn1 error (_ssl.c:4174)

strahinja_mi — Mon, 30 Sep 2024 12:50:30 GMT

Oh my God, thank you!

Re: nested asn1 error (_ssl.c:4174)

stojagrozny6 — Thu, 30 Jan 2025 21:21:06 GMT

That's it, bloody hell! This was driving me crazy for 2 days!
Thank you from the bottom of my heart @eleonora_sergijevic

Re: nested asn1 error (_ssl.c:4174)

steleDD57L — Tue, 11 Mar 2025 15:03:21 GMT

@eleonora_sergijevic THANK YOU SO MUCH!!! ❤️ YES, THAT WAS MY PROBLEM!!!
I had the error ssl.SSLError: [ASN1] nested asn1 error (_ssl.c:4027), I am from Serbia and after I uninstalled the government software called CELIK that has those MUP (Ministarstvo Unutrasnjih Poslova (Ministry of Internal Afferirs)) certificates, I was able to install and update Fusion once again. The CELIK software for reading our national ID cards is the worst I have ever seen, it is so bad and hard to install and now it even gave me Fusion problems. I saw on one post here: here https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/Problem-installing-Fusion-360-We-are-not-sure-what-is-preventing-installation-nested-asn1-error-ssl-c-4003-while-installing-Fusion.html

Here they mention just delete MUP, I could not find it and I had no idea it was referring to our MUP, I just thought the acronym was a coincidence, but that was indeed the problem. Very non descriptive page above but when I saw your comment I put it together and it solved my problem.

In short I just want to say thank you and for my fellow Serbs, jebem ti drzavu, jebem ti Vucica i jebem ti smece od CELIK softvera i slicne drzavne softvere.

@steleDD57L - this post has been edited due to Community Rules & Etiquette violation.

Re: nested asn1 error (_ssl.c:4174)

london2103 — Sat, 15 Mar 2025 12:04:27 GMT

Thank you @eleonora_sergijevic .
This help me. I just uninstall Celik ( Citac Licne Karte ) and everything works after that.

Re: nested asn1 error (_ssl.c:4174)

nikola.markovic.termovent — Tue, 02 Sep 2025 07:11:37 GMT

Thanks,

That worked for me!

😄

Re: nested asn1 error (_ssl.c:4174)

daviddQ6KRQ — Thu, 04 Sep 2025 13:18:51 GMT

Hi Eleonora,

I've uninstaled Čelik and deleted all of the MUP certificates that I could find, and I still have the same error. Have you done anything else? Or have you found any Čelik certificates? I even uninstaled Fusion and now I donćt have even that older version nor I can instal newone.

Please help.

Best,

David

Re: nested asn1 error (_ssl.c:4174)

mmkika — Wed, 17 Sep 2025 20:39:16 GMT

The problem is definitely the Celik program (MUP Serbia). Even when I uninstalled the Celik program and its certificates, I got the same error. In the end, I created a new Windows profile and installed Fusion on that profile. Here’s the link on how to solve it:

https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/Problem-installing-Fusion-360-We-are-not-sure-what-is-preventing-installation-nested-asn1-error-ssl-c-4003-while-installing-Fusion.html

Re: nested asn1 error (_ssl.c:4174)

g_vuckovic — Mon, 01 Dec 2025 23:52:03 GMT

Installing Celik and then deinstalling solved my problem.