Cleans the following:

• Firefox: Internet Cache, Cookies, Internet history, Saved form information, more.
• Chrome: Internet Cache and History, Download history, Last download location, more.
• Internet Explorer: Temporary Internet files, history, cookies, index.dat files, recently typed URLs, more.
• Opera: Cache, history, sessions, saved passwords, more.
• Windows: Empty Recycle Bin, clipboard, temp files, memory dumps, shortcuts, windows log files, more.
• Advanced cleaning: Windows event logs, old prefetch data, menu order cache, tray notifications cache, environment path, much more.
• Windows Explorer: Recent docs, Run (in Start Menu), Other Explorer MRUs, thumbnail cache, taskbar jump lists, network passwords.

Notes for Portable version.

Known limitations:
CCleaner Portable requires administrator or power user rights to run. These rights are needed for registering the required CCleaner components.

CCleaner Portable Settings:
To change CCleaner Portable Settings you need to manually edit the values in portable.ini under [PORTABLE] section.

• DebugMode - Show CCleaner
• Portable debug window.
  • 0 - Disabled (default)
  • 1 - Enabled
• CCleanerPath - Full or relative path to folder containing CCleaner files.
• CCommandLine - Add parameters in CCleaner command line.
• IfInstalled - Changes the behaviour when CCleaner is installed on the system.
  • 0 - Backup installed CCleaner (default)
  • 1 - Run installed CCleaner
  • 2 - Error message

CCleaner Portable command line options:

• /DEBUG - Adds /DEBUG in CCleaner command line.
• /AUTO - Adds /AUTO in CCleaner command line.
• /REG - Registers CCleaner component's and writes settings in registry.
• /UNREG - Unregisters CCleaner component's and removes CCleaner registry entries. *
• /NOIC - Skip CCleaner installation check.
• /DBG - Shows the CCleaner Portable debug window.
• /FORCE - Starts CCleaner even when there is fatal errors.
• When using /UNREG CCleaner Portable skips the CCleaner installation check.

CCleaner Settings:
Since version 1.37 CCleaner supports loading/saving settings to an INI file (CCleaner.ini) rather than the registry. CCleaner Portable uses this option and it should not be disabled. CCleaner settings are stored in CCleaner.ini under [Options] section.