Apple Intelligence is now available on iPhone, iPad, and Mac!

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Macbook Pro crashing after installing MacOS Catalina Security Update 2021-004

Yesterday I installed this security update. Ever since, my Macbook Pro continually and randomly crashes. Is anyone else's Macbook pro crashing after installing macOS Catalina Security Update 2021-004?

Posted on Aug 15, 2021 4:52 AM

Reply
Question marked as Top-ranking reply

Posted on Aug 15, 2021 10:10 AM

caisbrewer wrote:

Yesterday I installed this security update. Ever since, my Macbook Pro continually and randomly crashes. Is anyone else's Macbook pro crashing after installing macOS Catalina Security Update 2021-004?


Have you rebooted since the install...


You can try a safeboot to clear system cache files  https://support.apple.com/en-us/HT201262

Reboot as normal to test.

3 replies
Question marked as Top-ranking reply

Aug 15, 2021 10:10 AM in response to caisbrewer

caisbrewer wrote:

Yesterday I installed this security update. Ever since, my Macbook Pro continually and randomly crashes. Is anyone else's Macbook pro crashing after installing macOS Catalina Security Update 2021-004?


Have you rebooted since the install...


You can try a safeboot to clear system cache files  https://support.apple.com/en-us/HT201262

Reboot as normal to test.

Aug 18, 2021 2:31 PM in response to sung soo

After some research and helpful suggestions from this community, I reset the PRAM and the problem has been resolved. Thanks everyone!


—Sung Soo...Here's the directions:


How to reset PRAM/NVRAM

  1. Turn off your Mac.
  2. Press the power button.
  3. Immediately press the Command+Option+P+R keys.
  4. Hold the keys until your Mac restarts and you hear the startup sound.
  5. Release the keys.


Macbook Pro crashing after installing MacOS Catalina Security Update 2021-004

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.