I was getting this error company wide when trying to install any app from the Windows Store on a domain joined computer. The store was fully navigational, but any app I tried to install would instantly error. Showing the details would reveal Error Code 0x8024500c.
This is a fairly standard error code and there’s a lot of reasons already posted online; but for me it was one simple Group Policy setting:
Do not connect to any Windows Update Internet locations
Even when Windows Update is configured to receive updates from an intranet update service, it will periodically retrieve information from the public Windows Update service to enable future connections to Windows Update, and other services like Microsoft Update or the Windows Store.
Enabling this policy will disable that functionality, and may cause connection to public services such as the Windows Store to stop working.
Note: This policy applies only when this PC is configured to connect to an intranet update service using the “Specify intranet Microsoft update service location” policy.
Back in the Windows 7 days, it makes sense to disable this if you want to force clients to only use your WSUS servers and control the experience. However, it completely breaks the Windows Store!
You can find this policy under Computer Configuration > Policies > Administrative Templates > Windows Components > Windows Update.
Note that this doesn’t seem to break the private Business Store section if you have that configured up, which can be a nice way of controlling the apps your users see.