1 ACCEPTED SOLUTION
Now they sent me these instructions. I did everything and it worked!!! After almost a year, I am able to connect to my camera vie WiFi!!! 
Please ensure none of the Canon application is running in the back ground, go in to your Windows Task Manager (press CTRL+ALT+DELETE, then click on More Details) and End Task on any Canon application including Canon EOS Utility & Canon DPP, now right click on the Windows Flag icon on the bottom left on your PC, click on RUN, then type ‘%localappdata%’ is in the dialogue box, on the new window, please click on Canon_Inc_IC folder and delete all the folders inside of that folder.
1. Type %localappdata% into the ‘RUN’ box then. This will open file explorer at the local folder, C:\Users\YourUsername\AppData\Local.
2. Open the sub folder "CANON_INC".
3. Delete all the folders inside “CANON_INC”.
Once the above is performed, please restart your PC and try installing Canon EOS Utility from Canon support website.
