Dear students,

Apple has released a security update (2020-003) addressing the problems many users have been reporting regarding systems freezing in relation to camera use/hardware acceleration. (More info about user reports can be read here.)

You can run this security update yourself, when it's convenient for you. We advise running them as soon as possible. First, you have to make sure you have plenty of free space (at least 15-20GB) on your harddrive. When you have enough space, start with step 1 below.

1. Check which version you're running on macOS: Click on the Apple logo on the top left of your screen, and select About this Mac. If your version is 10.14.6, go straight to step 3. If it's lower than 10.14.6, go to step 2.

2. To update to 10.14.6, click on the Apple logo on the top left of your screen, and select System Preferences, then select Software Update. DON'T DO THE CATALINA UPGRADE. Click on More info beneath Other Updates are available, and run all the available updates. 10.14.6 should be listed specifically. This update will take about 30 minutes. After your machine has finished updating, go to step

3. Click on the  Apple logo on the top left of your screen, and select System Preferences, then select Software Update. DON'T DO THE CATALINA UPGRADE. Click on More info beneath Other Updates are available, Run all the available updates (specifically the 2020-03 security update) This update will take between 15-30 minutes.

Please send a message to if you have any questions, or if you need help with this.
Kind regards,
1:1 Laptop Specialist / Technology Support Specialist | IT Department