When I try and update on my laptop 5.79 to5.89 I get :
This handle is Invalid (see image)
Just to make sure, what version of windows and what antivirus
Common solution to "0x6" problems:
Right-click CCleaner desktop icon > click Properties
Open the Compatibility tab
Check "Run this program as an administrator"
Click Apply > OK
Thanks Hazelnut that fixed my problem Now updated!