Windows 11 Preview adds built-in network speed test from the taskbar
Microsoft’s Windows Insider builds 26100.7918 and 26200.7918 add a built‑in network speed test accessible from the taskbar: open the test via the Wi‑Fi/Cellular Quick Settings or the network icon in the system tray, and it launches in your default browser to measure Ethernet, Wi‑Fi, and Cellular performance to help troubleshoot connectivity.