1. Taking into consideration the manifest/config requirements regarding admin rights, as argent77 mention
Weidu should be always executed with admin rights due to the fact that Steam default installation directory is "..\program files\steam\steamapps\common" and it's protected directory.
2. Weidu executable should be signed vie certificate - you can get a free, fully featured SSL certificate from
https://letsencrypt.orgit should prevent many false-positives when weidu is recognized by antivirus and blocked.
3. weidu doesn't have any file details/information - it should have some of the information which are displayed here
http://imgur.com/6tqIMzHit will allow for checking what is the weidu file version without need to run executable itself.
Edit by Wisp: My mistake. I don't think anything was lost.