CCleaner  v5.70.7909 (06 Aug 2020)

Important information for Firefox users

If you use Firefox with a Firefox account, we strongly recommend that you update CCleaner to version 5.70 before cleaning. This version of CCleaner fixes an issue that can cause extension settings to be lost in Firefox.

The update also includes performance improvements and improved support for Opera GX.

Important fix for Firefox users

-Fixed a bug where CCleaner could wipe extension settings in Firefox if using a Firefox account

Cleaning

-Added Smart Clean support for Opera GX
-CCleaner now differentiates between Opera and Opera GX processes
-Fixed a rare bug where Health Check would not close all selected browsers

General

-Fixed a performance issue where CCleaner could use more CPU than it needed
-DetectOS syntax correctly supports full Windows build numbers in WinApp2

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https://www.ccleaner.com/ccleaner/builds

go for the SLIM build