Occasionally you may see pop-up notifications on your Chromebook. Please follow the instructions below to remove the pop-ups.
1. Clear the Basic Chrome History on the Chromebook by following the instructions here:
2. While still in Chrome, under the Advanced tab in the same Clear Browsing Data window from Step 1 above, choose Time range “All Time” and select all checkboxes. Note that this may clear any saved passwords or auto filled form data. Then choose “Clear data.”
3. While still in Chrome, go to Privacy and Security → Site Settings → Notifications
Select the button for “Don’t allow sites to send notifications”