"Problem installing Fusion 360. nested asn1 error (_ssl.c:4003)" when installing Fusion 360

Autodesk Support

Feb 5, 2025

Products and versions covered

Issue:

The following message appears when trying to install Fusion 360: 

 

Problem installing Fusion 360. 
What's wrong? 
We are not sure what is preventing installation.
nested asn1 error (_ssl.c:4003)

nested asn1 error (_ssl.c:4003)
 

 

Other possible messages:

 

ssl.SSLError: [ASN1] nested asn1 error (_ssl.c:4027)

Solution:

In order to solve the issue, perform the following:
  1. Type ​​​certmgr on the Windows Start button.
  2. Search for MUP and delete all their certificates.
If this solution doesn't work, try installing Fusion 360 on a new Windows User Profile. 

Products:

Fusion;

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