Autocad Fatal Error Unhandled Delayload Pm16.dll May 2026
The FATAL ERROR: Unhandled Delayload "pm16.dll" Module Not Found typically occurs during the launch of AutoCAD products. It is generally caused by missing or corrupted system dependencies that the software requires to load its core modules. Common Causes
Outdated Operating System: Missing critical Windows updates that provide necessary runtime libraries.
Corrupted .NET Framework: AutoCAD relies heavily on specific versions of the Microsoft .NET Framework; if these are damaged, it cannot load dependent DLLs like pm16.dll.
Visual C++ Redistributable Issues: Corrupted or missing Microsoft Visual C++ components are a frequent root cause for "Module Not Found" errors.
Damaged AutoCAD Installation: A partial or corrupted installation of the software itself. Recommended Solutions
According to Autodesk Support, you should try these steps in order:
Update Windows: Ensure your operating system is fully up to date by checking for updates in Windows Settings.
Repair .NET Framework: Use the Microsoft .NET Framework Repair Tool to fix common issues with the installation. Autocad Fatal Error Unhandled Delayload Pm16.dll
Reinstall Visual C++ Redistributables: Remove existing versions and reinstall the Microsoft Visual C++ Redistributable packages from the official Microsoft site.
Install AutoCAD Updates: Check the Autodesk Account or the Autodesk Access app for any pending product updates or enhancements.
Perform a Clean Uninstall: If the error persists, follow the Autodesk Clean Uninstall guide to remove all remnants of the software before reinstalling it.
How to Fix the "Fatal Error: Unhandled Delayload Pm16.dll" in AutoCAD
Getting hit with a "Fatal Error" right when you're in the zone is frustrating, especially when it involves a cryptic file like
. This error typically points to a failure in loading a specific component required for the application to run smoothly, often triggered by corrupted settings, missing updates, or conflicting drivers.
If you’re seeing this crash, here is a step-by-step guide to troubleshooting and getting back to work. 1. Reset AutoCAD to Default Settings The FATAL ERROR: Unhandled Delayload "pm16
Most fatal errors, including unhandled exceptions related to DLL files, are caused by corrupted user profiles or settings.
: Use the "Reset Settings to Default" tool included with your installation. According to Autodesk Support
, resetting is a primary solution for launch errors. Be sure to back up your custom settings first! 2. Update AutoCAD and Windows
A "Delayload" error often means the software is looking for a file version that doesn’t match what is currently installed. Check Updates : Visit your Autodesk Account
and ensure you have the latest service packs and hotfixes installed. Windows Updates
: Ensure your operating system is fully updated, as many DLL dependencies rely on the latest Windows C++ Redistributables. 3. Update or Reinstall Graphics Drivers
AutoCAD relies heavily on hardware acceleration. If your graphics driver is outdated or uncertified, it can cause the software to crash when trying to load display-related DLLs. : Check the Autodesk Certified Graphics Hardware list to see if you need a specific driver version. 4. Repair the Installation Method B: Disable Hardware Acceleration Sometimes pm16
file itself is missing or corrupted, a "Repair" is often faster than a full uninstallation. Windows Control Panel Programs and Features Select your AutoCAD version and click Uninstall/Change Repair or Reinstall and follow the prompts provided by the AutoCAD Installer 5. Disable Third-Party Add-ons
If you’ve recently installed new plugins or tools, they might be interfering with the startup sequence. Try launching AutoCAD without any third-party add-ons to see if the error persists. Still stuck?
If these steps don't clear the error, you may need to perform a Clean Uninstall
and reinstall to ensure all registry keys and shared files are fresh. Symetri.ie Are you seeing this error on or while using a specific command AI responses may include mistakes. Learn more AutoCAD Products Launch Error: Unhandled Exception c0000027
Method B: Disable Hardware Acceleration
Sometimes pm16.dll crashes during rendering previews.
- Go to
Tools>Options>Systemtab. - Click
Graphics Performance. - Uncheck
Hardware Acceleration. - Restart AutoCAD.
🎮 Solution 3: Update Graphics Driver & Disable DX12
- Download the latest Studio Driver (not Game Ready) from NVIDIA/AMD.
- Use DDU (Display Driver Uninstaller) in Safe Mode for a clean removal.
- After reinstalling, open AutoCAD > Graphics Configuration > set Graphics Driver to
DirectX 11(not DX12).
Prevention: How to Avoid the pm16.dll Error in the Future
Once you have solved the fatal error, follow these best practices to ensure it never returns:
- Never open PDFs by double-clicking inside AutoCAD. Use the
PDFIMPORTcommand manually instead. - Keep Windows Updated. Specifically, install every "Cumulative Update for .NET Framework."
- Avoid "Convert PDF to DWG" online tools. Many inject corrupt metadata that triggers the DLL crash.
- Use the built-in "AutoCAD PDF (General Documentation).pc3" plotter rather than third-party PDF printers (like Adobe PDF).