This is a fix that worked for me, I do not know if it will work for others but worth a try.
 
 

How To Fix

If you encounter the corrupted download message here’s the steps I took to fix it.
 
 

1. Go to your downloads at the bottom of your screen
    
    
    
    
    
   
2. Then click on the gear in the top right. Directly next to disk usage
    
    
    
    
    
   
3. Finally you want to clear your download cache, after this step it will log you out and you will have to login.
    
    
    
    
    
   

 
 

 
 
Hope you enjoy the Guide about Lost Ark – How To Fix Corrupted Download, if you think we should add extra information or forget something, please let us know via comment below, and we will do our best to fix or update as soon as possible!