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A new bug in Windows 10 affects network connectivity for Outlook, Office 365, Teams

A new bug, already acknowledged by Microsoft, prevents cloud apps, including Office 365, Microsoft Teams, Outlook, and other apps from connecting to the Internet. Due to the ongoing coronavirus crisis, it is probably the worst time for such bugs to appear.

For devices affected by the bug, Windows 10 shows the 'limited' or 'no internet' connection status in the notification area regardless of the fact that the Internet connection is active and available.

Devices using a manual or auto-configured proxy, especially with a virtual private network (VPN), might show limited or no internet connection status in the Network Connectivity Status Indicator (NCSI) in the notification area.


This might happen when connected or disconnected to a VPN or after changing state between the two. Devices with this issue, might also have issues reaching the internet using applications that use WinHTTP or WinInet

The bug is in KB4535996, which was released around a month ago for Windows 10 version 1909, and version 1903. It affects people using VPN and/or proxy connection, the two things you often rely on when working from home, like a million users to today.

If you are affected by the bug, uninstall the problematic update. To uninstall an update, open an elevated command prompt and enter the following command:

wusa /uninstall /kb:4535996


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