Reliability of ccleaner7

after automatic update, it doesn’t work any more

That’s too vague for anyone to even know where to start helping you.
Please describe exactly what you mean.
ie. Will it not install, will it not open, does it open but then freeze, something else?

it installs. when i launch it, i have to give authorisation to run it, but then nothing happens. running as administrator give the same result

Are you using an Antivirus/security other than the built in Windows ones?

yes: AVG antivirus

OK I suspect that the AVG is not recognising CCleaner 7 with it being new and so is blocking it from running.

Try making CCleaner 7 an exception or an ‘Allow’ in AVG, however AVG words it, and see if CCleaner 7 will run then.

even after complete disabling AVG, it don’t run.

I also got the first error after years, using 7,I do not like 7 at all, right from the beginning.

Hi @guydewit,
Please contact our support team via the Contact Us page on our Help Centre using the same email address you used to make your purchase. Once you have clicked Submit, please click the Start Chat button to give details to an agent so we can investigate this further.