The underlying Windows DLL dependencies might be damaged.
Before diving into complex fixes, try these 60-second solutions: Autocad Fatal Error Unhandled Delayload Pm16.dll
If the error persists, move to the professional fixes below. The underlying Windows DLL dependencies might be damaged
Use Microsoft Program Install and Uninstall Troubleshooter first, then the Autodesk Uninstall Tool to remove all traces before reinstalling. If the error persists, move to the professional fixes below