Hi, I'm John! I'm here to help.
Since you have a fixed IP, it’s possible that Microsoft’s servers have flagged it for some reason.
Have you already done any troubleshooting on your router? For example, have you checked firewall settings, tried a different DNS, or changed any network security settings?
In the meantime, if you haven’t already, please try these steps below:
Restart your router and modem:
> Even with a fixed IP, some ISPs allow refreshing it after a reboot.
Contact your ISP:
> They might have assigned you an IP that was previously flagged, or they might be able to give you a new one.
Change IPv4 settings:
> Press Windows + R key to open Run dialog.
> Type this and press Enter: ncpa.cpl
> Right-click on your current Wi-Fi connection and select Properties.
> Double click Internet Protocol Version 4 (TCP/IPv4)
> Under "Use the following DNS server automatically," use these values: 8.8.8.8 and 8.8.4.4
> Click OK to save and restart your PC and connection.
Flush your DNS cache:
> Open Command Prompt as admin and run:
ipconfig /flushdns
Run a traceroute:
> This can help pinpoint where the connection is failing. Open Command Prompt and type:
tracert answers.microsoft.com
> If it times out or fails, that could give a clue.
Check your firewall or security software:
> Open the Windows Security app.
> Click the "Settings" (gear icon) in the lower left.
> Under Security Providers, click "Manage Providers".
> Verify if Microsoft Defender Antivirus is the active antivirus and Windows Firewall is the firewall.
> If not, please uninstall the third-party antivirus, restart your PC, and check again at Settings > Windows Update.
Let me know how it goes.
Click "Reply" below to let me know.
Regards,
John J.D.