Latest update not installing

WinXP

Installation starts but once you get past initial paramaters it disappears and never completes.

And yes, I have tried a clean install.

Thanks

Brian K Mcclung

what version are you trying (just so we are all on the same page) ?

AV software?

free, pro, slim or portable build?

have you tried installing from Safe Mode?

Also Brian did you reboot after uninstalling the previous CCleaner version?