Canon MX532 software download available
Where do I find Canon MX532 Software download for iMac OS 10.11.6 El Capitan?
iMac (27-inch, Late 2013), OS X Mavericks (10.9.4), with Thunderbolt Monitor
System Preferences > Printers & Scanners > delete your printer and add it again. If it does not download automatically, go to the Canon support site. In my experience, Canon is not the fastest to post driver updates when there is a new OS version, but I see they posted one on 10/26:
