Here is why:
A "Portable" version typically means the software's registry entries and system files are self-contained within one folder. No Installation
Instead of making AutoCAD portable, make Windows portable. Install Windows 10 LTSC on a high-speed external SSD. Boot your host PC directly from that SSD. Inside that portable Windows, install AutoCAD 2012 normally. Autocad Portable 2012 64
Autodesk now offers a browser-based version of AutoCAD. It runs on any computer (Windows, Mac, Linux, Chromebook) without installation.
Official AutoCAD installations are optimized for the Windows Registry. They check for necessary dependencies (like .NET Framework versions and C++ Redistributables) during installation. Portable versions bypass these checks. Consequently, users often encounter "Fatal Here is why: A "Portable" version typically means
Most downloadable "portable" versions of AutoCAD 2012 are cracked copies repackaged to skip license checks. The creators remove the activation wizard and modify the acad.exe file.
A true portable application runs without installation, leaves no traces in the Windows Registry, and stores all settings in its own folder. Boot your host PC directly from that SSD
A niche group of users install AutoCAD 2012 legitimately on a Windows PC, then manually copy the C:\Program Files\Autodesk\AutoCAD 2012 folder to a USB drive. They also export specific registry keys (HKEY_LOCAL_MACHINE\SOFTWARE\Autodesk\AutoCAD\R18.2) and create a .reg merge script. When they plug into a new PC, they run the script to "fake" the installation.