To clean up your Windows system after uninstalling tons of software, without having to reinstall it entirely. Download Page ( For Further Updates ) https://www.ccleaner.com/ccleaner/builds Direct Download Link ( For v5.88.XXXX ) https://download.ccleaner.com/portable/ccsetup588.zip Go to the Registry tab, search for issues, fix all issues, you're done. When asked to Backup, click NO BACKUP. Don't use the 'Custom Clean' tab, unless you really know what you're doing, as you might break things up (erase saved passwords in your Chrome browser, ...). ** The portable edition will never trigger a CS:GO VAC Auth. Error, compared to the normal one.