Lync Online Service SSL certificate changes for client connectivity

Article ID: 2855339 - View products that this article applies to.
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Summary

The Lync Online Service is migrating to a new trusted root certificate authority between April and June 2013. This update may cause secure connectivity issues with client computers that do not support the Baltimore CyberTrust Root certificate authority root certificate.

More information

Client computers will no longer be able to perform secure connections to the Lync Online Service using the GTE CyberTrust certificate authority root certificate after April 2013. The new Baltimore CyberTrust Root certificate authority root certificate is mandated by the third party root provider to address security and compliance concerns for secure client connections to the Lync Online Service. All client computers that connect to the Lync Online Service should have a copy of the Baltimore CyberTrust Root certificate authority root certificate installed locally in their Trusted Root Certifications Authorities Certificates store.

For detailed information about Windows Root Certificate Program information:

931125 Windows Root Certificate Program members

The secure connectivity issues with the Lync Online Service that are described in the Summary section of this article can occur at the level of the local computer. Use the following steps to confirm that the Baltimore CyberTrust Root certificate authority root certificate is properly installed on the client computer to ensure a secure connection to the Lync Online Service:

  1. Open a new Microsoft Management Console using mmc.exe
  2. Click on File, Add or Remove Snap-in... from the Microsoft Management Console menu
  3. Click on the Add button
  4. From the This snap-in will always manage certificates for: list, choose Computer account
  5. Click on the Finish button and then click on the OK button
  6. Select the Local Computer Trusted Root Certifications Authorities Certificates store
Locate the Baltimore Cyber Trust Root certificate authority root certificate in the details pane of the Certificates Snap-in that is hosted in the Microsoft Management Console. The Baltimore CyberTrust Root certificate authority root certificate will have an expiration date of 5/12/2025

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A screen shot shows the Baltimore Cyber Trust Root certificate highlighted in the Certificates pane


If the Baltimore CyberTrust Root certificate authority root certificate is not listed in the Local Computer Trusted Root Certifications Authorities Certificates store then use the following steps to download and install the certificate onto the Windows server or client computer:

  1. Click on the link listed below to download the Baltimore CyberTrust Root certificate authority root certificate

    Baltimore CyberTrust Root certificate
  2. Save the Baltimore CyberTrust Root certificate authority root certificate file to a folder on the local Windows server or client computer
  3. Open Windows Explorer and browse to the folder that lists the Baltimore CyberTrust Root certificate authority root certificate file
  4. Right click on the file and click on the Install certificate option on the pop up menu
  5. Click on the Open button, then click on the Next button
  6. Choose the Place all certificates in the following store option
  7. Click on the Browse button and select the Trusted Root Certification Authorities store
  8. Click on the OK button
  9. Click on the Next button and the Finish button to complete the Certificate Import Wizard

Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.

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Article ID: 2855339 - Last Review: September 10, 2013 - Revision: 2.0
Applies to
  • Microsoft Lync Online
Keywords: 
kbsurveynew kbgraphic KB2855339

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