你好yifengep，

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这个问题是否发生在这个特定的移动设备上？是否会发生在其他设备或设备系列上？如果可能的话，你能提供一个简单的重现样本来帮助我们调查
吗？注意，这是开发UWP应用程序的公共论坛，如果你有一些私人代码，你可以  通过访问  此处 。
您将获得1：1的支持，如果是微软的问题，您的支持票将是免费的。

此外，您还可以使用设备中的Feedback Hub应用程序反馈此问题，这将有助于相关团队调查并缩小问题范围。

祝你好运，

微风跨度>

I have a WebView based UWP app, which will download zip files from internet, and unzip files into app's LocalState folder, then open these files (javascript, css, html, and resource file) in webview, all resource will be handled by local web server.

It runs well on desktop, but will crash on Lumia 550 after open and close this local web pages several times. After crash several times, it will not start at all, will crash on app's splashscreen. Then I could not launch this app at all, even uninstall -> restart device -> install app. The only way to make it running again is hard reset the device, then play with it several times then crash again, and could not launch app after several crashes.

The Lumia 550 is updated to the latest Windows 10 Mobile 1709, Visual Studio pro 2017 is updated to the latest version 15.4.4. I could not get the crash dumps via device portal page. Since this device has only 1GB RAM, if run the app in debug mode there are some c++ memory allocation exceptions, so I could not find what cause these crashes. I put this app to HockeyApp, and HockeyApp did not show any crash for this app. 

Please help.

Hi yifengep,

Welcome to the Developing Universal Windows apps forum! Please utilize tagging when posting to this forum, thanks!

Whether this issue happens on this specific mobile device? Does it happen on other device or device family? If possible, could you provide a simple reproduce sample to help us investigate it? Note that, here is the public forum for developing UWP apps, if you have some private code, you can  open a support case by visiting here. You will get 1:1 support on that and your support ticket will be free if it is Microsoft's issue.

Besides, you can also feedback this issue using the Feedback Hub app in your device, it will help the related team look into and narrow the issue down.

Best regards,

Breeze