Cannot access certain websites since updating to 2015.10.0.2208

Since I updated to 2015.10.0.2208, I cannot access several of my own websites with IE, Chrome, FF.

The ones I am unable to access have a .htpassword file in the root and a .htaccess file in a folder as the user needs to input a password to access a specific folder, although there is no restriction on the home page which is a normal index.html file

The only way I can access the sites is to disable web shield

This has also affected several of my clients, so I don’t think this is a local problem to my PC

I’m using the free version of Avast on Windows 7

Please can anyone advise

Thanks

Disable https scanning and check if that solved the problem.

Hi - thanks for your response. I have disabled https scanning already as I was unable to access any https sites, even Google

Kind regards

Can you give me 1 or 2 of the websites?
Please make the link(s) not clickable.