Some users get windows cannot find c: program files error and sometimes error is like this windows cannot find C:/Program Files/WindowsApps/Microsoft.x64…/Win32Bridge.Server.exe. make sure you typed name correctly and try again.
Go for the reset of Cortana.
- Right click the start button and select Settings -> Apps
- Scroll down the page and click on Cortana
- Click on Advanced options
- Scroll down and click on reset button.
You are all done, Restart windows and everything will be fine.
If you are facing any other error you can try sfc scannow command also. Goodluck