There is a captive portal login page that must be signed before I get internet access, and that page is not opening because I don't have internet. When I try to open it via the URL, it says "DNS_PROBE_FINISHED_NO_INTERNET" on Chrome and something similar on other browsers.
My Wifi adapter is Realtek RTL8723DE
It works fine on all other Wifi networks than my school network
All my other devices work fine on the school network and the captive portal opens
I used to be able to connect to the internet on the school network on my PC earlier as well, I can't think of any hardware or software change on my part that has triggered this issue.
My school network is protected by WPA2, and I have the password and can connect to the Wifi network without issues, but it says "No Internet".
What I've already tried:
Restarting my pc
Making sure my Wifi drivers are up to date
Opening an http:// site without ssl, still says no internet
Opening the captive portal URL(I know it) on many different browsers.
Getting in touch with the school network admin, not helpful