Hello there guys,
Sorry to hear you're still having issues!
To correct this situation, I would like to suggest that you follow the steps below.
Firstly, please make sure you're launching Steam / Epic and Uplay with admin privileges, by following these steps :
https://support.ubisoft.com/en-gb/faqs/000025662
Then, please, navigate to the Ubisoft Game Launcher "cache" folder, by default located here: C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher\cache
Open the cache folder and move the "ownership" folder to a safe location.
Once you have backed up that folder, delete the "cache" folder.
After deleting the cache folder, please verify the game files within Steam:
- Open Steam
- Right-click the affected game in your Steam library and select Properties from the drop-down
- Select the Local files tab and click the Verify integrity of game cache... button
- Steam will verify the game's files. This process may take several minutes
- Once the process is completed, the Check Window will automatically exit
Within Epic;
- Open Epic
- Navigate to the game in your Library and click the cog icon.
- Click the Verify button once the drop down menu appears.
- After verification, the launch option appears again.
If an issue is found, you will be given the option to Repair, click Repair. After repairing the issue, please verify the game again until no issues are found.
When this has been completed, try launching the game again.
Let us know if you have any further issues!