If the download link is completely dead and you do not have an active subscription, Autodesk support will not provide this file. Your only option then is a third-party archive (use at your own risk).
Before installing Service Pack 2, administrators and users should adhere to the following protocol: autodesk inventor 2013 service pack 2 download
has become significantly more difficult as Autodesk officially retired support for this version years ago. Autodesk Community, Autodesk Forums, Autodesk Forum Official Availability & Support Retired Status If the download link is completely dead and
A: Likely, if those errors are from known bugs listed above. However, if crashes persist, check your graphics driver (roll back to a 2013-era certified driver) or disable hardware acceleration. if crashes persist
Since Autodesk has removed the 2013 product updates from their main "Product Updates" page, follow these steps: