The Enterprise 2015 LTSC variant based on this build remains relevant for highly specialized, air-gapped industrial equipment. Technical Specifications: Windows 10 Version 1507 Specification Codename Threshold 1 (TH1) OS Build 10240.xxxxx Release Date July 29, 2015 Kernel Version Architecture Support x86 (32-bit) and x64 (64-bit) Mainstream Support End May 9, 2017 How to Safe-Source a Windows 10 1507 ISO
Deploying an OS from 2015 comes with strict limitations that make it unsuitable as a primary, daily-driver operating system:
Once you have successfully downloaded and verified your ISO file, you need to flash it onto a USB flash drive (minimum 8GB capacity).
Tech enthusiasts and system administrators maintain historic virtual machines to replicate specific temporal software environments. The Challenge with Official Microsoft Sources
Windows 10 version 1507, codenamed "Threshold 1," was the first stable release of the Windows 10 operating system. It was released to the public on July 29, 2015, following a long period of development and a final preview release to Windows Insiders on July 15, 2015. This version carries the build number 10.0.10240 and was retroactively named "1507" by Microsoft, a naming convention that uses the last two digits of the year (15) and the month (07) of its release. windows 10 1507 iso download
Use to burn the 1507 ISO to the drive. (Select MBR partition scheme if installing on a very old BIOS-based PC, or GPT for newer UEFI systems).
✅ If you must use 1507, run it inside a VM (e.g., VirtualBox, VMware) with no network access and take frequent snapshots.
Yes, if it's a generic Windows 10 Home/Pro key or an original 8.1/7 key that was eligible for the free upgrade. Volume license keys for later LTSC versions will work.
⚠️ Avoid random “ISO download” websites that bundle toolbars, keyloggers, or cryptocurrency miners. Always verify the hash. The Enterprise 2015 LTSC variant based on this
Click . You can choose to download it through your web browser or directly via Rufus. Method 2: Official MSDN / Visual Studio Subscriptions
What specific are you trying to test on this build?
If you decide to proceed, always:
Released in July 2015, Windows 10 version 1507 (build 10240) marked a new era for Microsoft, moving away from the traditional "release-to-manufacturing" (RTM) model. The name "1507" is a retroactive label, indicating a release in July 2015 (YYMM) to fit a new versioning scheme. The Challenge with Official Microsoft Sources Windows 10
For advanced users or IT professionals who need the absolute final version of the 2015 LTSB, community archivists have preserved the "End of Support" builds. The following examples are for the 2025 LTSB final version, which represent the very last official security updates for this operating system:
If you insist on running 1507 for legacy purposes, follow these hardening steps:
Compare the string output exactly to the verified hashes listed above. Installation and Post-Setup Considerations