Additional Issue Details:
- In event viewer, there is an error related to .Net Framework
- When checking .Net Framework, it returns 'No Version'. - .Net Framework version checking command;
- wmic /namespace:\\root\cimv2 path win32_product where "name like '%%.NET%%'" get version
- When installing .Net Framework, it's not being installed with 'higher version' already installed error
Causes:Fatal errors have a variety of causes. They often indicate a corrupt drawing, program corruption, browser was not properly configured, or a problem with the system configuration.
Solution:There are several ways to troubleshoot the problem:
- Make sure your Windows system is up-to-date with the latest updates.
Update the product.
Updates for latest releases are acquired via the Autodesk Desktop App. Right-click its icon down on the status bar next to the time and pick "Check now." You may also download updates through your Autodesk Account (see Where to get Product Updates, Add-ons, and Enhancements). For older products, see Autodesk Downloads.
- Try opening another drawing.
If you can open another drawing, the original drawing may be corrupt and require repair.
See: How to repair corrupt AutoCAD files
- Try running the executable file (i.e. acad.exe) as administrator.
Right click on the shortcut, select open file location - then right click on the file and select Run As Administrator
- Uninstall any antivirus or desktop locking programs.
These programs can cause errors in AutoCAD, since they prevent the system environment from working.
Reset AutoCAD to defaults.
See: How to reset AutoCAD to defaults
Turn off Hardware Acceleration.
See: Starting AutoCAD-based products without hardware video acceleration
Update your graphics driver.
Install the latest graphics driver from your video card manufacturer or use an AutoCAD-certified driver.
See: How to update your system to the latest certified video driver
Try logging in under a new Administrator Windows Account.
If you create a new account and can successfully open the drawing, you can either use that account or rebuild the user profile in Windows.
See: How to create a new local administrator Windows user account
If "DisplayLink Core" software is installed on your system, try uninstalling it.
- Uninstall all add-ons, plug-ins, and object enablers.
Uninstall and reinstall the .NET Framework.
See: How to remove and reinstall the Microsoft .NET Framework
Uninstall and reinstall Visual C++.
See: How to remove and reinstall Microsoft Visual C++ Runtime Libraries
- Clear the digital signature icons and then uninstall and reinstall the application.
See: FATAL ERROR: Unhandled Access Violation Reading 0x0000 Exception at 4048b9h
Configure Internet Options as the default browser and remove all check marks from the LAN Setting option.
- Open Internet Options (Control Panel > Network and Internet > Network and Sharing Center > click on Internet Options link).
- Click the "Connections" Tab and then click "LAN Settings."
- Deselect all settings:
- Do a full uninstall and reinstall of AutoCAD.
See: Remove All Products from a Windows System
If all the above solutions fail, you may need to ask the Community forum or contact Autodesk Customer Support.