Can't Add Apps at SharePoint Store

Question

I get this message:

Sorry, apps are turned off. If you know who runs the server, tell them to enable apps.

Please give me the steps to enable this.

Answer 1

Here is a handy Powershell script you can use for activating apps in 2013:

# Check if the execution policy is set to Unrestricted  
$policy = Get-ExecutionPolicy  
if($policy -ne "Unrestricted"){  
Set-ExecutionPolicy "Unrestricted"  
}  

# Check if current script is running under administrator credentials  
$currentPrincipal = New-Object Security.Principal.WindowsPrincipal(     [Security.Principal.WindowsIdentity]::GetCurrent() )  
if ($currentPrincipal.IsInRole( [Security.Principal.WindowsBuiltInRole]::Administrator ) -eq $false) {   
(get-host).UI.RawUI.Backgroundcolor="DarkRed"   
clear-host   
write-host "Warning: PowerShell is not running as an Administrator.`n"   
exit  
}  

# Load SharePoint powershell commands  
Add-PSSnapin "microsoft.sharepoint.powershell" -ErrorAction SilentlyContinue  
cls  

# Ensure that the spadmin and sptimer services are running  
Write-Host  
Write-Host "Ensure that the spadmin and sptimer services are running" -ForegroundColor    Yellow  
net start spadminv4  
net start sptimerv4  

# Create your isolated app domain by running the SharePoint Management Shell as an administrator and typing the following command.  
Write-Host  
Write-Host "Create your isolated app domain by running the SharePoint Management Shell as an administrator and typing the following command." -ForegroundColor Yellow  
$appdomain = Read-Host "Your App Domain Name"  
Set-SPAppDomain $appdomain  

# Ensure that the SPSubscriptionSettingsService and AppManagementServiceInstance services are running   
Write-Host  
Write-Host "Ensure that the SPSubscriptionSettingsService and  AppManagementServiceInstance services are running." -ForegroundColor Yellow  
Get-SPServiceInstance | where{$_.GetType().Name -eq "AppManagementServiceInstance" -or        $_.GetType().Name -eq "SPSubscriptionSettingsServiceInstance"} | Start-SPServiceInstance  

# Verify that the SPSubscriptionSettingsService and AppManagementServiceInstance  services are running   
Write-Host  
Write-Host "Verify that the SPSubscriptionSettingsService and     AppManagementServiceInstance services are running." -ForegroundColor Yellow  
Get-SPServiceInstance | where{$_.GetType().Name -eq "AppManagementServiceInstance" -or     $_.GetType().Name -eq "SPSubscriptionSettingsServiceInstance"}  

# Specify an account, application pool, and database settings for the  SPSubscriptionService and AppManagementServiceInstance services   
Write-Host  
Write-Host "Specify an account, application pool, and database settings for the   SPSubscriptionService and AppManagementServiceInstance services." -ForegroundColor Yellow  
$login = Read-Host "The login of a managed account"  
$account = Get-SPManagedAccount $login   
$appPoolSubSvc = New-SPServiceApplicationPool -Name SettingsServiceAppPool -Account     $account  
Write-Host "SettingsServiceAppPool created (1/6)" -ForegroundColor Green  
$appPoolAppSvc = New-SPServiceApplicationPool -Name AppServiceAppPool -Account $account  
Write-Host "AppServiceAppPool created  (2/6)" -ForegroundColor Green  
$appSubSvc = New-SPSubscriptionSettingsServiceApplication –ApplicationPool     $appPoolSubSvc –Name SettingsServiceApp –DatabaseName SettingsServiceDB   
Write-Host "SubscriptionSettingsServiceApplication created  (3/6)" -ForegroundColor   Green  
$proxySubSvc = New-SPSubscriptionSettingsServiceApplicationProxy –ServiceApplication    $appSubSvc  
Write-Host "SubscriptionSettingsServiceApplicationProxy created  (4/6)" -ForegroundColor  Green  
$appAppSvc = New-SPAppManagementServiceApplication -ApplicationPool $appPoolAppSvc -Name     AppServiceApp -DatabaseName AppServiceDB  
Write-Host "AppManagementServiceApplication created  (5/6)" -ForegroundColor Green  
$proxyAppSvc = New-SPAppManagementServiceApplicationProxy -ServiceApplication $appAppSvc  
Write-Host "AppManagementServiceApplicationProxy created  (6/6)" -ForegroundColor Green   

# Specify your tenant name   
write-host  
Write-Host "Set AppSiteSubscriptionName to 'app'" -ForegroundColor Yellow  
Set-SPAppSiteSubscriptionName -Name "app" -Confirm:$false  
Write-Host "AppSiteSubscriptionName set" -ForegroundColor Green  

Answer 2

Here is a link from TechNet really going to the dept about how you can configure SharePoint for Apps, including e.g. creating a subdomain, configuring ssl certificates and starting the correct services.

Answer 3

Were you able to turn on apps? Before you get too excited turning on Apps. Sharepoint 2013 - Apps

Answer 4

You can find step by step configuration/installation instruction at : Installing The PDF Converter for SharePoint Online App in SP2013 & SP2016

The article should provide you detailed steps. I have followed the article and it works for me.