[Mike]

On 01/04/2020 at 04:53, nukecad said:

This 'only run once following install' behaviour is a sign that a programme is being blocked from running by your antivirus programme.

So as Hazelnut asked which AV are you using?

TrendMicro

[Mike]

Ccleaner suddenly stopped opening. I have CCleaner Professional.

 

I uninstalled and reinstalled the ccleaner program.  It opened and worked once. After I exited and tried to open it again by double-clicking ther icon on my desktop, it would not open again.  What to do?