Paths to executable files should be added as a "trusted location" in the Options dialog box on the Files tab. Follow this procedure if the File Loading - Security Concern message is displayed as you open a drawing or load custom executable files (using commands such as APPLOAD). 
- In the File Loading - Security Concern dialog box, do one of the following: 
	 
- If you know the file is trustworthy, click Load to continue opening the file. 
		
 
- If you are unsure about the file, click Do Not Load. 
		
 
 
   
- After you verify that the file is trusted and all files in that location are trusted, do the following: 
	 
- Click Applications menu 
		  
 
 Options. 
		 
- In the Options dialog box, Files tab, add the folder to Trusted Locations. (A read-only folder is recommended.) 
		
 
 
	 Note: The trusted location changes go into effect after you restart the product.