AutoCAD 2010 was designed for Windows XP and Windows 7. Running a portable version on Windows 10 or 11 often leads to frequent crashes and "Fatal Error" messages due to missing .NET Framework dependencies.
The official, free tool from Autodesk to view and convert files. LibreCAD Open-source 2D CAD for simple projects. Free NanoCAD / BricsCAD Professional-grade alternatives with lower hardware needs. Paid / Free Trial How to Handle Legacy Files Portable.Autodesk.AutoCAD.2010.lite
Modern CAD workflows rely on cloud saving and collaboration, which legacy portable versions cannot support. Modern, Secure Alternatives AutoCAD 2010 was designed for Windows XP and Windows 7
Use the free DWG TrueView to convert 2010-era files into modern formats or vice-versa. LibreCAD Open-source 2D CAD for simple projects
If your goal is simply to access old AutoCAD 2010 files, you do not need a portable version:
If you are a student or educator, you can access the latest versions of AutoCAD for free through the Autodesk Education community. What operating system are you currently using? Is this for a personal project or professional work ?