SharePoint Hosted App - This page can't be displayed

When we deploy directly from visual studio, app will work fine. Because when deploy from visual studio, It will add host entry for an app. If upload the .app package file to SharePoint site manually, may get below issue on click of an app,

Example of host entry by visual studio on deploy,

127.0.0.1             app-e9cbfac49ea738.spdevapps.com     # 4beb64a4-83fc-474b-b6c6-d43df3f33fdf;http://sp2013/

::1                        app-e9cbfac49ea738.spdevapps.com     # 4beb64a4-83fc-474b-b6c6-d43df3f33fdf;http://sp2013/

In above example,

app-e9cbfac49ea738.spdevapps.com – App URL

4beb64a4-83fc-474b-b6c6-d43df3f33fdf – Product ID of an app, you can find this AppManifest.xml

http://sp2013/ - Host site URL where installing an app based on uploaded app package.

If get above issue (The page can't be displayed), we need to add host entry for the app manually. Use below powershell command to get app url because, app url will be changed everytime with app id.,

                            $instances = Get-SPAppInstance -Web