Hello! My name is Ben a fellow member here in the community, not a Microsoft employee. Hope you are doing well!
Since the issue is happening on your computer only. It could be that one of your app or settings is preventing you from accessing these websites. Can you try disabling any of your Anti-virus software as well if you have one? Then try accessing the website again.
For Windows defender, it can be disabled by following the steps here:
https://support.microsoft.com/en-us/windows/tur...
Additionally, try to also flush your Windows device DNS. To do so, just open command prompt in administrator mode by searching for Command Prompt > Right click > then choose Run as administrator.
On the command prompt window, run the following command:
ipconfig /flushdns
If the same issue persist, run the following command next:
ipconfig /registerdns
ipconfig /release
ipconfig /renew
netsh winsock reset
I hope this works this time. Please let us know how it goes or if there are still problems and we are here to assist.
Regards,