Clear C & C (1)
On your Chromebook, open Chrome
At the top right, click on the three dots, then on More tools.
Clear C & C (2)
Click on More tools >> Clear browsing data
Clear C & C (3)
In the Clear browsing data window, click on the Time range dropdown menu and select All time.
Clear C & C (4)
Tick all of the checkboxes and click Clear data. (Note - the Browsing history check box may be grayed out. This is normal)
Restart the Chrome browser.