Win10 Pro(1709)侧载UWP（VS2017）发布打包遇“entry point not found”错误求助

Hey there, let's break down this tricky issue you're facing, and also unpack why it might be less common for developers submitting to the Windows Store.

Why Store Developers Might Encounter This Less #

• The Store's submission pipeline runs extra validation and auto-fixes minor manifest inconsistencies that manual sideloading doesn't handle. Microsoft's packaging tools for the Store often normalize entry point declarations that would trip up a local release build.
• Most modern Store-targeted apps use newer SDK versions (post-16299) where this potential bug may have been patched. Since you're locked to 16299, you're hitting an edge case that's less prevalent now.
• Store apps rely on Microsoft's official signing process, which can resolve hidden issues with how the entry point is referenced in the final signed package.

Fixes to Try (Beyond Basic Troubleshooting) #

• Verify your Package.appxmanifest entry point:
  • Make sure the EntryPoint attribute in the Application tag exactly matches your app's namespace and main class (e.g., MySmallUwpApp.App). Even tiny typos or case mismatches can trigger this error in release mode, where compiler optimizations are enabled.
  • Double-check that your main app class inherits correctly from Application and has the necessary attributes like [MTAThread] if applicable.
• Temporarily disable compiler optimizations:
  • In VS2017, go to your project properties → Build → Advanced → set "Optimize code" to No for the Release configuration. Aggressive optimizations sometimes strip or rename the entry point method in a way Windows can't resolve.
• Do a clean, full rebuild:
  • Manually delete the bin and obj folders in your project directory, restart VS2017, and rebuild the entire solution. Cached debug-mode artifacts can interfere with release packaging.
• Align SDK versions:
  • Confirm your project's Target SDK Version (16299) matches the Minimum SDK Version. Mismatches can cause entry point resolution failures on older Windows builds like 1709.
• Repair Visual Studio 2017:
  • Head to Control Panel → Programs → Uninstall a program → select Visual Studio 2017 → click "Change" → choose "Repair". Corrupted UWP packaging components in VS can lead to this error.

If It's a Windows 10 1709 Bug #

Since other developers have flagged this as a potential OS bug, here are workarounds to try:

• Use MakeAppx.exe directly: Skip VS2017's built-in packaging wizard and use the Windows SDK tool directly. Run this command in Command Prompt (navigate to your project's release output folder first):

  MakeAppx pack /d ".\YourAppFolder" /p "YourAppPackage.appx"
  

• Package on a newer Windows build: If possible, try packaging your app on a Win10 build 1809 or later (even though your target is 16299). The packaging tooling on newer systems might generate a package that's compatible with 1709 without the entry point error.

I know it's frustrating when there's no clear-cut solution, but these steps have helped other developers in similar spots. Let me know if any of these work for you!

内容的提问来源于stack exchange，提问作者rlinner