However, you are not out of luck. The absolute maximum version of Xcode officially supported by macOS High Sierra 10.13.6 is . The Master Plan: What You Need to Know
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The Mac App Store restricts downloads of Apple’s integrated development environment (IDE) strictly to the newest macOS releases. If you attempt to search for Xcode on an older operating system, the system will block you with compatibility warnings.
Click → . Confirm macOS High Sierra version 10.13.6 . If you’re on an earlier 10.13.x, update first via the App Store → Updates. download xcode for mac os high sierra 10136 work
Every version of Xcode has strict macOS compatibility requirements. If you try to run a version that is too new, your system will block it. If you run a version that is too old, it might lack modern features or support for newer programming languages.
Furthermore, the hardware context cannot be ignored. Many users remaining on High Sierra are doing so because of hardware limitations or specific software dependencies (such as 32-bit apps, which High Sierra supports but later versions do not). The struggle to download Xcode on these machines is compounded by the sheer size of the software—often exceeding 10GB—and the slower processors of older Macs. The download process itself can be unstable through the Mac App Store, forcing developers to rely on the "More" section of the Apple Developer Downloads site, which requires an Apple ID and provides the software as a direct download.
While Xcode 10.1 is great for learning or maintaining older codebases, it is too old to compile and submit modern apps directly to the modern iOS App Store (which typically demands Xcode 15 or 16+). However, you are not out of luck
To help you get started with your development environment, let me know:
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For macOS High Sierra 10.13.6, the final officially supported version of Xcode is . This specific version serves as the ceiling for High Sierra users. While Xcode 10.2 technically existed, it required macOS Mojave (10.14), leaving High Sierra users stranded. Xcode 10.1 included Swift 4.2 and the iOS 12.1 SDK. For a time, this was a sustainable environment. However, in the modern context, this version is a major bottleneck. As of recent years, Apple has mandated the use of Xcode 11 or later (and specifically the iOS 13 SDK or later) for App Store submissions. Therefore, a High Sierra machine running Xcode 10.1 is effectively restricted to maintaining legacy apps or developing personal projects that do not require App Store distribution. This link or copies made by others cannot be deleted
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iOS 12.1, watchOS 5.1, tvOS 12.1, and macOS Mojave 10.14 Swift Version: Swift 4.2.1
He double-clicked the .xip archive. macOS’s Archive Utility groaned. It took fifteen minutes to expand. Finally, a blue icon materialized: .