Suddenly, this afternoon, my Windows 11 PC connects to the internet and every browser and other app works BUT Micosoft Outlook and OneDrive say there is no internet access

Question

Suddenly, this afternoon, my Windows 11 PC connects to the internet and every browser and other app works BUT Microsoft Outlook and OneDrive say there is no internet access

Answer 1

Follow these steps in order, testing Outlook and OneDrive after each step:

1. Confirm Windows reports Internet access correctly
   If Windows shows the No Internet or Limited connectivity icon even though browsers work, reset the network stack:
   1. Open Command Prompt as Administrator.
   2. Run:
      ipconfig /release
ipconfig /renew
ipconfig /flushdns
2. Check proxy settings
   Misconfigured proxy can block only certain Microsoft 365 apps.
   1. Open Settings > Network & Internet > Proxy.
   2. Turn off any manual proxy settings.
   3. If using an automatic configuration script, temporarily turn it off and test.
3. Verify IP and DNS configuration
   1. Check that the IP address is not in the 169.254.x.x range. If it is, DHCP from the router is failing; restart the router and ensure DHCP is enabled.
   2. Ensure a DNS server is listed and can be reached (for example by pinging it from Command Prompt). If DNS is unreachable, Outlook and OneDrive may report no Internet while browsers use cached or different DNS.
4. Run Windows network troubleshooters
   On Windows 11, run the Network & Internet troubleshooter from the Get Help app to automatically diagnose and fix common connectivity issues that can affect Microsoft 365 apps.
5. Update Windows and OneDrive
   For the OneDrive connectivity issue specifically:
   1. Open Windows Update and install all available updates.
   2. Install the latest OneDrive client from the official download page.
   3. Restart the PC and test again.
6. If Outlook still cannot connect on wired but works on Wi‑Fi
   If the issue appears only on a wired LAN (yellow exclamation mark, “No Internet Access”) while Wi‑Fi works, update the network adapter (NIC) driver. If that does not help, temporarily disable IPv4 Checksum Offload in the adapter’s Advanced properties and test again.
7. As a last resort: Network reset
   If none of the above resolves the issue and other apps intermittently show connectivity problems, perform a Network reset (this removes and reinstalls all network adapters and resets settings):
   1. Go to Settings > Network & internet.
   2. On Windows 11, select Advanced network settings > Network reset.
   3. Select Reset now and confirm, then restart.
      Afterward, reconfigure any VPN clients or virtual switches as needed.

If Outlook and OneDrive still report no Internet after these steps while all other apps work, collect screenshots of the network icon, proxy settings, and any error messages, then contact Microsoft support for deeper account or service diagnostics.

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References:

• Fix Wi-Fi connection issues in Windows
• "OneDrive cannot connect to Windows" error when accessing files in OneDrive
• Can't sign in or activate Outlook and Microsoft 365 applications
• Fix Ethernet connection problems in Windows

Answer 2

Doing a Windows Update resolved the issue.