When installing or updating the Adobe Creative Cloud desktop application, you receive an error, "Installer was unable to copy a critical file/directory. Please try installing again. (Error code: 43)"
This error can occur when the installer doesn't have proper read/write access to a critical file or directory. To resolve the issue, try the following solutions in order.
Solution 1: Uninstall the Creative Cloud desktop app, and then reinstall it
Solution 2: Temporarily disable antivirus software
Solution 3: Manually remove the affected folders
Removing these directories/folders may affect the installation and licensing of other installed Adobe software. You may need to reinstall the products after removing the folders.
Solution 4: Log in using a new admin account
Occasionally, a user account can become corrupted and prevent the installer from accessing or creating the necessary files and folders. Create a new admin account, log in to the new account, and then try to install your Adobe application again. For detailed instructions, see:
If you are able to install your Adobe application successfully with the new local administrator account, you may want to migrate your documents and settings to the new account and use it as your new default account.
Solution 5: Troubleshoot network instability issues
Network connectivity or stability issues can prevent the installer from copying a necessary file or folder.