Error opening file for writing

I am getting the "Error opening file for writing" when trying to run the 5.61.7392 update. I've tried all the Google search suggestions. none work, any ideas?

I am having same issue trying to download version 5.61 of the Free CCleaner. I need ideas also please.

See here for the solution:

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