28/03/2020
Microsoft has warned that a Windows 10 update is preventing Office 365, Microsoft Teams, Outlook, and other critical work apps from reaching the internet caused by a bug affecting all supported versions of Windows 10 that have applied update KB4535996
Devices using a proxy, especially with a VPN might show limited or no internet connection status in the Network Connectivity Status Indicator in the notification area. Devices with this issue, might also have issues reaching the internet.
https://docs.microsoft.com/en-us/windows/release-information/status-windows-10-1903