Hi,
为了部署仅限企业内部使用的企业应用，你可以通过sideloading技术进行部署。这需要在计算机组策略设置中，选中“Allow all trusted
applications to install”。
然后，可以通过Powershell cmdlets或Deployment Image Servicing and Management (DISM)平台，进行具体部署。
例如：添加应用 add-appxpackage C:\app1.appx
–DependencyPath C:\winjs.appx， 移除应用 Remove-AppxPackage Package1
更多Powershell cmdlets，请参考以下链接：
http://technet.microsoft.com/en-us/library/hh856045.aspx
你进行sideloading的时候，是需要开发者账户的。此外，为了运行sideloaded LOB app,你需要激活sideloading
product key或加入到设置了"Allow all trusted applications to install"的域中。这要视具体的系统情况而定。
请您参考
How to Add and Remove Apps，和
Deploying Metro style apps to businesses，以了解更多详情。
通过sideloading部署的应用是没有有效期的，除非应用本身是有使用期限的限制。您可以参考以下链接：
http://msdn.microsoft.com/en-us/library/windows/apps/hh694065.aspx
另外由于本论坛是主要关注windows store app开发的问题，更多关于sideloading product key这个问题您可以在TechNet的Windows 8 IT Pro 这个论坛得到更加专业的帮助！
感谢您对本论坛的支持，并祝您好运！
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