Install Chrome for all user accounts
As an administrator, you can use the alternate installer to install Google Chrome for all user accounts on a Windows computer. By doing so, you'll replace all other versions of Chrome that may already be installed on your computer for other user accounts.
Don't have administrator rights? Download Chrome for your user account at http://www.google.com/chrome
After you've installed Chrome through alternate installer, users who've already installed Chrome in their user accounts will be notified that the browser has updated to a system-wide version the next time they sign in and open the browser. In some cases, they may need to recreate their profile information, such as bookmarks and browsing history, if they were formerly using a more recent version of the browser.
You can install Chrome for all user accounts on your computer if you're signed in as an administrator. After you've downloaded Chrome.dmg from http://www.google.com/chrome, drag the Chrome icon to the Application folder to complete the system-wide installation.