Error while adding the app in the sharepoint(2013) page through powershell script

Question

Hi,
    I have created one powershell script to uninstall and install the sharepoint 2013 apps. The code is working fine, but after adding the app in the page I am getting the error "
Internet Explorer can not display the webpage".
If I am deploying the app through Visual Studio, its getting deployed successfully and I am getting an option to trust the app.And I am able to add it in the page. But this permission is not coming when I am installing the app using power shell.
Please let me know whether to do any modifications to the power shell script.
Thanks.
Pradeep

Answer 1

Hi,
   We are using sharepoint hosted app.
Below is the script to uninstall and install the app.
cls
Add-PSSnapin Microsoft.SharePoint.PowerShell –ea SilentlyContinue
# uninstall the app
Write-Host "uninstallation of app"
$InstalledSPApps = Get-SPAppInstance -Web "http://mySharepointSite.xyz.com"
$appToUninstall = $InstalledSPApps | where {$_.Title -eq 'myCustomSharepointApp'}
if ($appToUninstall -ne $null)
    Uninstall-SPAppInstance -Identity $appToUninstall ;
    Write-Host "uninstalled successfully"
# Import-SPAppPackage
Write-Host "Import the app"
pause
$sourceApp = ([microsoft.sharepoint.administration.spappsource]::RemoteObjectModel);
$myspapp = Import-SPAppPackage -Path "D:\SharePoint 2013\AppsSolution\myCustomSharepointApp.app" -Site "http://mySharepointSite.xyz.com" -Source $sourceApp ;
Write-Host "Enter to install the app"
pause
$app = Install-SPApp -Web "http://mySharepointSite.xyz.com" -Identity $myspapp;
$AppName = $app.Title;
Write-Host "app '$AppName' registered"
pause
$appInstance = Get-SPAppInstance -Web "http://mySharepointSite.xyz.com" | where-object {$_.Title -eq $AppName};
$counter = 1;
$maximum = 150;
$sleeptime = 2;
Write-Host -ForegroundColor White "Please wait..." -NoNewline;
pause
while (($appInstance.Status -eq ([Microsoft.SharePoint.Administration.SPAppInstanceStatus]::Installing)) -and ($counter -lt $maximum))
    Write-Host "." -NoNewline;
    sleep $sleeptime;
    $counter++;
    $appInstance = Get-SPAppInstance -Web "http://mySharepointSite.xyz.com" | where-object {$_.Title -eq $AppName}
pause
if ($appInstance.Status -eq [Microsoft.SharePoint.Administration.SPAppInstanceStatus]::Installed)
    Write-Host "The App was successfully installed.";
    $appUrl = $appInstance.AppWebFullUrl;
    Write-Host -ForegroundColor White "The App is available at '$appUrl'.";