Repairing Skype for Business Issues for Mac Devices

Some users on Mac devices may experience issues with using Skype for Business (S4B) especially with logging in and picking up calls. If you are an affected user, please try the steps below:

Step-by-step guide

1. Go to the GlobalSign certificate page: IntranetSSL Root & Intermediate Certificates

2. Download the following two certificates (by default they will be saved in your Downloads folder)

   1. GlobalSign Non-Public SHA1 Chain

      1. GlobalSign Non-Public SHA1 CA - G3 SHA1 • RSA • 2048

   2. GlobalSign Non-Public SHA256 Chain

      1. GlobalSign Non-Public SHA256 CA - G3 > SHA256 • RSA • 2048

3. Install both certificates to System Keychain:

   1. In Finder, browse to your Downloads folder, and double click on each one

   2. Your Keychain will open.

   3. Click on the Certificates menu item (left-hand side)

4. Double-click on each certificate (below) and open Trust settings. Under When using this certificate, change to Always trust.

   1. GlobalSign Non-Public SHA1 CA-G3

   2. GlobalSign Non-Public SHA256 CA-G3

5. Close the window to save the preferences. You may be prompted to enter your computer password.

6. Open Skype for Business and log in with your 8-character UWaterloo username (e.g. j25rober) and password.

Related articles