Part 1: Installing Workflow Manager for SharePoint Server 2013 (offline install)
Part 2: Configuring Workflow Manager for SharePoint 2013

 
With a common SharePoint Server 2013 installation you will be able to create workflows. But be careful, you are using the SharePoint 2010 workflow engine which will likely be not supported in the next SharePoint version. To create SharePoint 2013 workflows you need to install and configure the Workflow Manager 1.0.

There are two ways to install the Workflow Manager 1.0. The easy way is to download and run the online installer directly on the SharePoint server. You can download the Workflow Manager 1.0 online installer using this link: http://go.microsoft.com/fwlink/?LinkID=252092. But what if there is no internet connection available on the SharePoint server? Then you should use the offline installation guide below. Let’s get started!

Preparation
Before you install the Workflow Manager make sure the corresponding SharePoint 2013 farm is up and running. Use the same setup user as you did for the SharePoint installation.
Check the prerequisites and supported platforms.
Configure the Windows Firewall on the SQL server to allow incoming traffic on the TCP ports 12290 (HTTPS) or 12291 (HTTP) in the Windows Firewall on your SQL server(s) for incoming traffic. For more information see: Windows Firewall für den SQL Server Zugriff konfigurieren or Open a port in Windows Firewall.

Installation
On a client with internet access download the Web Platform Installer v4 (WebPI) command line tool: http://download.microsoft.com/download/7/0/4/704CEB4C-9F42-4962-A2B0-5C84B0682C7A/WebPlatformInstaller_amd64_en-US.msi.
Get more information about the Web Platform Installer v4 (WebPI) command line tool.

Run the WebPlatformInstaller_amd64_en-US.msi on a client with internet access.
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Click Next.

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Click Install.

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Check the Workflow Manager 1.0 and click I Accept.

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Click Continue.

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Click Finish.

Open the Workflow Manager PowerShell with administrative rights and execute the following command:
webpicmd /offline /Products:WorkflowManager /Path:C:\temp\WorkflowManager
webpicmd /offline /Products:WorkflowManagerRefresh /Path:C:\temp\WorkflowManager

Adjust the path if you wish to save the offline files in a different location.
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Copy the WorkflowManager folder from the source server to C:\temp on the target server (this will probably be a SharePoint server). Note: The WorkflowManager folder may be used as a full offline installer package on every server you need to install the Workflow Manager in offline mode.

On the target server (probably a SharePoint server) log on with the SharePoint setup user and open the command prompt with administrative rights. Execute the following two commands:
cd c:\temp\WorkflowManager\bin
and
WebpiCmd.exe /Install /Products:WorkflowManager /XML:c:/temp/WorkflowManager/feeds/latest/webproductlist.xml
WebpiCmd.exe /install /Products:WorkflowManagerRefresh /XML:c:/WorkflowManager/feeds/latest/webproductlist.xml

Adjust the commands above if you use different paths.
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In larger SharePoint environments you may install the Workflow Manager on multiple SharePoint servers.