The update KB3201945 is designed to fix multiple issues with the new operating system and was first received by Windows insiders in November but the problem wasn’t flagged up with it then. Many users claim that they are facing connectivity issues after updating. Users are claiming that the update KB3201945 kills Wi-Fi connections altogether leaving them without the internet. The another surprising thing is that the newly released KB3201945 Windows 10 don’t even mention anything regarding connectivity. Here is the update summary
Improved the reliability of mobile device management (MDM) dis-enrollment, Distributed Component Object Model (DCOM), Peripheral Component Interface and PowerShell. Addressed issue that causes excessive battery drain if you have a Chinese Input Method Editor installed and use Windows Hello to log in. Addressed issue with OLE drag and drop that prevents users from downloading a SharePoint document library as a file. Addressed issue with Super Floppy-formatted fixed media devices that are not recognized by Windows 10 Anniversary Update or accessible in Windows Explorer. Addressed issue that causes the System Center Configuration Manager (SCCM) client to fail installation when a device is re-imaged using the SCCM task sequence. Addressed issue that causes the loss of optional component (OC) state information, including all Hyper-V virtual machines, after upgrade. Addressed issue that causes Windows Explorer to display information that’s inconsistent with what’s stored on the Floppy disk. Addressed issue that, after connecting a shared CD/DVD-hosted drive with no media inserted, causes some of the commands, like DIR and NET USE, to hang. Addressed issue where customers cannot use directory cache sizes greater than 64 KB. Addressed issue where Windows Explorer sometimes does not prompt for credentials when a user logs on using a Microsoft account. Addressed additional issues with application compatibility and Internet Explorer
Microsoft also discussed the Wi-Fi disconnection problem with KB3201945 Windows on the Microsoft Forum where the moderator states: We are looking into reports that some customers are experiencing difficulty connecting to the Internet. We recommend customers restart their PCs, and if needed, visit https://support.microsoft.com/help/10741/windows-10-fix-network-connection-issues. To restart, select the Start button from the taskbar, click the Power button and choose Restart (not Shut down). So, if you haven’t updated your system then the only way to escape the flaw is to avoid the update until Microsoft fixes it. You can block the update from Windows 10 update setting. If you already updated and are facing the issue then you need to hard reboot your computer to fix the issue. Simply, hold down the Shift key and simply shut down your computer. Keep Shift held down until the PC has fully powered down, then reboot.
