Privacy error on one computer for one specific website

My brother had a wired experience with lastpass, extension in chrome, on a site. It kept taking him to page.

He disable extension and things worked, re-enable and it continue to work. Just some glitch.

Yes I saw that. I assume they had extension for all browsers.

Have you tried a network reset? Start > Settings > Network and Internet, bottom of rand hand side > Network Reset

May have to re-install custom comm software like VPN's, and you will have to re-enter Wifi passwords.

FYI: Worth a check:

Explaining Avast’s HTTPS scanning feature

How to disable the HTTPS scanning feature

If you do not want Avast to scan HTTPS traffic, you have the option of disabling the feature in the Avast settings:
1. Open the Avast user interface → select Settings.
2. Select Active protection → click Customize next to Web Shield.
3. Select Main settings → check/uncheck Enable HTTPS scanning to turn this feature on/off.