Windows Vista/ Windows 7/ Windows 8: %LOCALAPPDATA%\Google\Chrome\User Data\
Locate the folder called "Default" in the directory window that opens and rename it as "Backup default."
Try opening Google Chrome again. A new "Default" folder is automatically created as you start using the browser
1. [drive]:\Documents and Settings\[user]\Local Settings\Application Data\Google\Chrome 2. Right click on "User Data" folder 3. Go to "Security" tab 4. Click on "Advanced" button 5. Check the last option "Replace permission entries..." 6. Click OK (this will take a few minutes), then restart your computer