CCleaner cleans only admin account under Windows 7

Problem:
CCleaner on Windows 7 only cleans the admin account used to allow the installation, not the standard user account.
When you launch CCleaner from the standard user account, the UAC kicks in and asks for an admin password. If  you enter local admin passwd, it cleans the admin account. If the domain admin password is entered, it cleans the local copy of the domain admin account...

Solution:
Go into All programs/CCleaner and then right-click on "ccleaner.exe", then click on properties and security. There, among the list of users for the program, you have to add the name of the standard user that requires CCleaner, and then you have to check all the authorizations boxes (complete control, modify, etc).
Then next time you launch CCleaner from the standard user account, the UAC kicks in and again asks for a password. Now the difference is that you can simply enter the password for the standard user (not admin) and UAC will be satisfied with it. Then CCleaner will run and clean the standard user account as desired.

Source: Piriform Community Forums