Configuration file may be locked by another process or have been set Read Only(.cfg, .bak).
File: C:\Program Files\Autodesk\AutoCAD 2013\acad2013.cfg
Please correct this problem and press Retry or press Cancel to exit the application.
After dismissing the above message, a fatal error may occur as follows:
AutoCAD LT Error Aborting
FATAL ERROR: Unable to Process Configuration File!
Causes:
Invalid or restricted permissions on the AutoCAD program folder (both on Window and Mac OS
systems). When creating a deployment for installing AutoCAD, if the Support Content is
specified to go in Program Install Folder, Windows systems often do not allow writing to the
Program Files folder and the error will occur.
Legacy AutoCAD CAD Managers typically deploy the Support Content to the Program install
folder, but nowadays User Access Control (UAC) will block the proper installation and
configuration of AutoCAD. The error still happens even if AutoCAD is run in an administrator
account.
Solution:
Verify the below points, testing after each:
Reset AutoCAD to defaults (see How to reset AutoCAD to defaults).
Uninstall and reinstall AutoCAD (see Recommended uninstall and reinstall
procedures for AutoCAD).
If the a deployment was used for installation, select to install Support Content
into the Local user profile folders.
If no deployment was used, check the permissions of the following folders to
make sure read-write access is present for the current user account (it might be
necessary to grant it for "Everyone"):
Windows
C:\Users\<user folder>
C:\Program Files\Autodesk
macOS
/Users/<user folder>
/Applications/Autodesk
