MSDEVBUILD

I have encountered lost Internet connection, network connectivity issue when using Microsoft Office, Office 365, Outlook, Teams, Internet Explorer 11 (IE11), and some version of Microsoft Edge and device, UWP app and Store app, when also using VPN (Virtual Private Network) in Windows 10, chance is my system affected by a bug introduced in Windows 10 by the February 27 update KB4535996

Latest Windows 10 Update Is Now Breaking WiFi and IE, Edge and office 365 No Internet – Microsoft Shared new update Version 1903 with Fix

I have tried for update OS, but keep saying update is failed and tried with many ways but there is no solutions. Finally, I have updated Windows 10 1903 update into machine after that issue is get resolved and internet started working on in the all apps .

Solution - Windows 10 Update Assistant

Microsoft released Windows 10 1903 cumulative update KB4515384 on September 10. The monthly cumulative update has resulted in a number of issues, including a Search and Start menu problem, audio issues, and connectivity bugs too. I have updated Windows 10 1903 update into machine after that issue is resolved

Download Microsoft windows 10 Assistant in the below URL and it will take more time for update all the required changes, after that internet issue will get away from your system

https://www.microsoft.com/en-us/software-download/windows10