Windows 10: Windows 11 blocks full access to a website

HelloI've got a Surface Pro, since migrated from win10 to 11, I cannot use fully some website the website considers that I'm on mobile device, because I get error that this site isn't designed for mobile. I checked with several up to dated browser Brave, Edge, Chrome, Firefox, with some extension about user-agent force to be on desktop device, responsive design etc and nothing change.When I use the website on another computer windows 10, macOS with several browsers : that works fine.I test with another win11 computer : that works fine too.So, the only way is a window11 problem "identif

:)

 

Windows 11 blocking access to .edu websites.

I updated my laptop yesterday with Windows 11 and now whenever using Chrome or Edge, my institution's websites are blocked. I am an employee at a university and need access to these. I get the same message everytime for both Chrome and Edge (see below). I've tried to troubleshoot and have gotten nowhere. Please help!

This site can’t be reached

www.depts.ttu.edu unexpectedly closed the connection.

Try:

• Checking the connection
  
• Checking the proxy and the firewall
  
• Running Windows Network Diagnostics
  

ERR_CONNECTION_CLOSED

 

My son can access blocked websites via https

Hello,

Thank you for writing to Microsoft Community Forums.

1. Are you facing this issue with a specific website?

2. Which websites are you trying to block?

I understand that your child is able to access blocked websites from the child account. I suggest you to just type the domain name proceeding with the .com without HTTPS (Example: Youtube.com) and check if that helps. Refer the following article for
steps to
block inappropriate website.

If the issue still persists, I suggest you to remove and re-add the child to the family account. Refer the following article for steps to

remove members from your family group. The following link will provide steps to

add members to your family group.

Hope it helps.

Sandeep Kumar M

Microsoft Community – Moderator

 

How to Block Websites

I have googled a bit and found software that can be used to block websites on a computer. I also found another way by using Windows which I would prefer. My problem is I must be doing something wrong. Here is the site that has the steps.
How to block websites | PCWorld

Here is what happens when I perform step 6. I am the administrator by the way.





Any ideas on how to make this work?