The installer may hang at 98% on "Updating system registry." Be patient. Do not force close. Wait up to 10 minutes.
I notice you're asking about installing on Windows 11 . That’s a very old version (released in 2006), and it is not officially supported on Windows 11. However, if you still need to try, here are the main points to consider before proceeding. install autocad 2007 on windows 11
Do not install directly from a CD or a downloaded ISO mounted as a drive. Copy the entire contents of the AutoCAD 2007 CD/DVD to a folder on your desktop (e.g., C:\Temp\AutoCAD2007 ). This bypasses autoplay issues and CD-ROM speed bottlenecks. The installer may hang at 98% on "Updating system registry
This is a comprehensive guide to installing on Windows 11 . if you still need to try