Hello, thank you for reaching out to Microsoft Q&A.
This issue might be related to the specific Wi‑Fi network you’re connected to. For example, your IP address may be blocked from creating a new Microsoft account.
If you are using a VPN, temporarily disable it and try creating a new Microsoft account again. I
f you’re not using any VPN, connect your PC to a different Wi‑Fi network, such as a mobile hotspot, and open a private browsing window (InPrivate/InPrivate Browsing) in different browsers like Edge or Chrome.
Then try creating a new Microsoft account using this link:
If you’re still having issues after trying these steps, please let me know.