My Mac book air says it’s connected to the wifi but won’t connect or load to the internet

Hi,

Following document could help your issue.

If your Mac isn't connecting to the internet over Wi-Fi - Apple Support

Bought a new MacBook Air, used "Migration Assist" to copy content from my previous machine. Following this action, I could connect to wifi but could not access the Internet (or email or Apple etc). Started new MacBook in "safe" mode and reinstalled Norton Security (which seems to have (partly) transferred with Migration Assist) all now OK!