Asking me to sign but won't let me because it says I am not connected to the internet.

Hi! Let me help you with this issue.

What is the status of your internet connection at your taskbar?

Can you still browse the internet using Edge or Google Chrome?

The sign-in prompt in Word and OneNote is failing because the apps cannot reach Microsoft’s online services, even though Wi‑Fi is working. This can be caused by general connectivity issues, network/firewall settings, or a problem with the network adapter/driver.

Try these steps in order:

1. Confirm Windows has internet access

• On the Windows lock screen, select Network and make sure the device is actually connected to a working network.
• If using Wi‑Fi and the signal is weak, temporarily connect the PC directly to the router or modem with an Ethernet cable.
• If already on Ethernet, unplug and firmly reinsert the cable until it clicks.
• Test the internet on another device on the same network to confirm the network itself is working.

2. Check that Microsoft 365 services are reachable

• In Microsoft Edge (not Internet Explorer), go to https://login.microsoftonline.com and sign in.
  • If this does not redirect to https://www.office.com or the sign-in fails, a firewall, antivirus, or network policy is blocking Office from reaching Microsoft 365.
• Repeat the same test in an InPrivate window in Edge.
  • If it only fails in normal mode, clear cached data or adjust any security/privacy extensions that may be blocking the sign-in page.

3. If Outlook/Office apps show “No Internet Access” on wired LAN only If the wired LAN icon shows a yellow exclamation mark and says No Internet Access, but Wi‑Fi works:

• Update the network card (NIC) driver from Windows Update or the NIC manufacturer’s support site.
• If the issue persists, disable IPv4 Checksum Offload for that adapter:
  1. Open Control Panel → View network connections.
  2. Right‑click the active network adapter → Properties → Configure → Advanced tab.
  3. Select IPv4 Checksum Offload → set to Disable → OK.

4. Retry sign-in in Word/OneNote

• Close all Office apps completely.
• Reopen Word or OneNote and try signing in again after confirming that https://login.microsoftonline.com works in Edge.

If the apps still report no internet even though the browser tests succeed, the problem is likely with local security software or network configuration blocking Office traffic; temporarily disabling or reconfiguring that software, or updating/removing and reinstalling the network adapter, may be required.

References:

• Troubleshoot Problems Signing In to Windows
• Can't sign in or activate Outlook and Microsoft 365 applications
• Connection issues when signing in after updating to Office 2016 build 16.0.7967 on Windows 10