In less than a month from now Microsoft will stop dishing out security updates for the original version of Windows 10 (build 1507) that was released back in July 2015. Microsoft had actually planned to stop supporting Windows 10 Version 1507 on March 26, 2017, but later decided to push back its end of servicing date to May 9, 2017, giving users some additional time to update.
That date happens to be the second Tuesday of May, otherwise known as Patch Tuesday, which is when Microsoft rolls up a bunch of security fixes and patches into a single update. It will be the last Patch Tuesday available to the original version of Windows 10—going forward, users of build 1507 will need to update in order to stay secure. This applies to several SKUs of Windows 10, including Windows 10 Home, Windows 10 Pro, Windows 10 Education, and Windows 10 Enterprise.
The only exceptions are Windows 10 Enterprise 2015 LTSB and Windows 10 IoT Enterprise 2015 LTSB, both of which will continue receiving security updates after the May 9 deadline.
Users who choose not to upgrade Windows 10 will still be able to use their system, but they may be missing out on feature upgrades and, more importantly, will be vulnerable to any newly discovered exploits that haven't already been patched.
"If you continue to use version 1507, your computer will still work, but since you won’t continue to receive new security updates or other quality updates, it could become more vulnerable to security risks and viruses. Microsoft offers complimentary support to ensure your device has the latest updates installed and requires that your device be up to date before assisting with other technical support issues," Microsoft warns.
This isn't a surprising move by Microsoft. Windows 10 was always intended to be the last monolithic release of Windows, meaning there will not be a Windows 11 or subsequent version of Windows to replace Windows 10. Instead, Microsoft has moved to a Windows-as-a-Service (WaaS) model, in which feature updates are required a few times a year.
Since releasing Windows 10 nearly two years ago, Microsoft has issued two major upgrades—Redstone 1, otherwise known as the Anniversary Update, and more recently Redstone 2, also known as the Creators Update. Both introduced better security and new features to Windows 10, such as Game Mode. Later this year Microsoft is planning to release yet another major upgrade.
If you're unsure which version of Windows 10 you're running, type winver in the search box on the taskbar. A pop-up window will appear that tells you the version and OS build