Apps won't open : W10/11 with CCleaner installed ?

[TWT]

I have just spent a few hours over a few days trying to figure out why Firefox, Excel, Word and Adobe Acrobat would not launch
after clicking their respective shortcuts. I tried everything, repairing, re-installing, you name it. I even upgraded to W11
from W10 on my laptop thinking that would flush away whatever was causing the problem. I was wrong.

Same issue on W11 as well .Then I stumbled on a post in a forum which gave me something new and unexpected to try.
It said that the ' Performance Optimiser' in CCleaner could be the culprit. That is something I have never even opened but it
puts apps to sleep when it thinks they're not being used. So I opened that utility and hit the 'scan' button. It showed a list
of apps which had been put to sleep which included all of the ones I could not get to open. After 'waking them up'
they all started working fine. That utility had put apps to sleep which I used, some frequently, others not so. The
theory is that by putting unused apps to sleep, it will free more resources and speed your computer up. There is no
practical way to turn 'Performance Optimiser' off ( at least in CCleaner Pro which is what I have).

So, if you find apps not working in W10/11 on a computer with CCleaner, check this first, it might stop you
wasting a few hours of your life.

[DaveReidUK]

Originally Posted by TWT

There is no practical way to turn 'Performance Optimiser' off (at least in CCleaner Pro which is what I have).

Other than uninstalling it, presumably?

Or not installing it in the first place.