If the error is application-specific, disable the Delayload feature via Group Policy (gpedit.msc) > Administrative Templates > System > DLL loading.
This article explains why the pm16.dll error occurs and provides to fix it permanently, whether you are on Windows 10 or Windows 11. Autocad Fatal Error Unhandled Delayload Pm16.dll
The pm16.dll error often occurs during PDF import because AutoCAD switches to a different rendering pipeline (GDI vs. Hardware Acceleration). Outdated GPU drivers cause a fatal exception. If the error is application-specific, disable the Delayload