Windows 10 Build 17763 is the final version of Windows 10 October 2018 Update, version 1809. Microsoft is rolling out it to the public. Here you can get the official ISO images made by Microsoft to install this build from scratch.
Windows Defender is the default antivirus app shipped with Windows 10. Earlier versions of Windows like Windows 8.1, Windows 8, Windows 7 and Vista also had it but it was less efficient previously as it only scanned spyware and adware. In Windows 8 and Windows 10, Defender is based on the Microsoft Security Essentials app which offers better protection by adding full blown protection against all kinds of malware. However, if you prefer to use alternative solution for protecting your PC, you might want to disable Windows Defender. Here is how you can disable it in Windows 10 Fall Creators Update.
OneDrive is the online document storage solution created by Microsoft which comes bundled with Windows 10. It can be used to store your documents and other data online in the cloud. It also offers synchronization of stored data across all your devices. "Files on-demand" is a feature which can display placeholder versions of online files in your local OneDrive directory even if they were not synchronized and downloaded. If you didn't get the Files On-Demand feature after installing Windows 10 Fall Creators Update, here is simple fix.
Microsoft just started rolling out the Windows 10 Fall Creators Update to the public. It is a feature update to the previous Windows 10 version, known as "Creators Update" or "Windows 10 version 1703".
Windows 10 Build 16299 has been confirmed as the final version of Windows 10 Fall Creators Update. Microsoft has just started rolling out the Windows 10 Fall Creators Update to the public. Here you can get the official ISO images made by Microsoft to install this build from scratch.