How to install an SSL certificate on Skype for Business?

This guide offers quick instructions on generating a CSR code and installing an SSL certificate on Skype for Business (formerly Microsoft Lync). Split into three sections, the tutorial contains CSR generation and SSL installation guidelines, while the third section includes a brief history of Skype for Business.

Please note that Microsoft recommends using UCC certificates as it’s often necessary to secure multiple subdomains for different machines. If you’ve already applied for your SSL Certificate and received it from your CA, feel free to skip part one and jump straight to the installation steps.

Before generating the CSR, it’s necessary to indicate the service or services you wish to encrypt. You have to do this with the Type argument from the CSR generation command.

Generally, you can use the Default type.

The Default, AccessEdgeExternal, and DataEdgeExternal types are for Edge servers, while the WebServicesExternal and WebServicesInternal types are for web streams.

Here is a list of the most common arguments:

To generate the CSR you can use the Request-CSCertificate command. Run it in the Powershell:

After your CA sends the necessary files to your inbox, download the ZIP folder and extract its contents on your device. Skype for Business requires SSL files to be in PKCS#7 (.p7b) or PKCS#12 (.p12 or .pfx) formats.

If you receive your cert in another format such as PEM for instance, you can convert it via OpenSSL or an external conversion tool.

To import a PKCS#12 (.p12 or. pfx) file, enter the following command in your Skype for Business server powershell, replacing the path:

First, you need to identify your SSL certificate via the Get-CSCertificate cmdlet and then sort the results with the Where-Object cmdlet.

Enter the following command to list all available certificates:

Get-CsCertificate

To find your particular certificate enter the following.

To enable the certificate for default and web services roles run the following command:

Set-CsCertificate -Type WebServicesExternal -Thumbprint “B142918E463981A76503828BB1278391B716280987B”

If your search command returned just one result, you can enable the certificate via the following command:

Skype for Business (formerly Microsoft Lync and Office Communicator) is an enterprise instant messaging software developed by Microsoft as part of the Microsoft Office suite. It comes with the on-premises Skype for Business Server, and software as a service version offered as part of Office 365.

Microsoft launched Office Communicator (OCS) 2007 on July 28, 2007. In November 2010, the platform was renamed Lync. In May 2013, Microsoft announced that it would allow Lync users to communicate with Skype, a popular instant messaging platform it had acquired in 2011.

Microsoft renamed Lync to Skype for Business in 2015. On September 22, 2015, Skype for Business 2016 was released alongside Office 2016. Later that year, on October 27, 2016, Microsoft released Skype for Business for Mac users.

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