Cannot Update To Any New Free Version

I don't know why Piriform doesn't fix this; they have been told by a number of people what the problem is. If you try to install a new version and get the Abort Retry Ignore popup box, close everything, open your Task Manager, and End any task still running that has to do with CCleaner. Then try to install the new version again. Should work!

Piriform....FIX IT!

They do need to fix it. In the meantime what's near the top of this topic has been working when getting the error "Error opening file for writing":

https://forum.piriform.com/topic/5739-solution-when-ccleaner-wont-install-or-download-windows/