"not connected to pc" error when I try to scan pages

[geraldt12]

I am trying to scan pages to my laptop and receive the above error message.  I can print to the printer a pixma mx452.

[geraldt12]

Thank you, the documents scanned.  Do I need to run this each time I want to scan something?

[Danny · Accepted solution]

All of this should be a one-time installation on this specific computer.  Just make sure to open up IJ Scan Utility anytime you need to scan a document or photo.

Thanks for choosing Canon!

[geraldt12]

Thank you vry much for your help, you made it simple.

[RameshN]

I am also having problems. The unit is connected to my laptop and printing wirelessly with no problems. I cannot scan, however. It is telling me there is no connection. 
I tried to find the IJ download, but cannot find it anywhere. Please help. Thanks (Windows 10)