Managing personal Outlook.com account settings, security, and privacy
Hello, thank you for reaching out to Microsoft Q&A.
Could you please try connecting your device to a different Wi-Fi network and see if you can sign in with your account on Outlook Web? That is, if you've connected your device to a home Wi-Fi network, switch it to a mobile hotspot and see if you can sign in successfully.
If you're still experiencing issues, ensure VPN is turned off on your device. Then, try running the Network reset commands on your Home PC.
- Open Command Prompt as Administrator. Execute these commands one by one and click Enter for each command.
netsh winsock reset
netsh int ip reset
ipconfig /release
ipconfig /renew
ipconfig /flushdns
Once executed, restart your computer and try signing in.
Let me know if you still need more help.