Block access to a website

It's not always possible to block sites through the hosts file. How to proceed then?

Through the Windows Defender Firewall

Note: if you have a pc with the below Firewall rule, you can ex-/import the rule, avoiding having to type over 10 or more IP addresses.

• Switch to the Advanced settings
• Add a new Outbound Rule
• Rule Type: Custom
• Program: All programs
• Protocol and Ports: <default>
• Scope: Which remote IP addresses does this rule apply to? These addresses: w.x.y.z & a.b.c.d (e.g. be aware that msn.com & www.msn.com have separate ip addresses!!!)
• Action: Block the connection
• Profile: leave all 3 check boxes selected
• Name: Block intrusive websites

Source: https://superuser.com/questions/270524/blocking-web-sites-with-windows-firewall

The messages that appear do not always suggest that the site is blocked:

• Opera: Your Internet access is blocked - Try: … Checking firewall and … ERR_NETWORK_ACCESS_DENIED
• Brave: Your Internet access is blocked - Try: … Checking firewall and … ERR_NETWORK_ACCESS_DENIED
• Firefox: Problem loading page / Unable to connect … firewall …
• IE: Can't reach this page - More information > Error Code: INET_E_RESOURCE_NOT_FOUND
• Chrome: Your Internet access is blocked - Try: … Checking firewall and … ERR_NETWORK_ACCESS_DENIED
• Edge: Hmmm… can't reach this page - Details … Error Code: INET_E_RESOURCE_NOT_FOUND

Through a browser extension

see BrowserExtensions