MacOS 11.4 - system extension fails to load NEW

I am having this same issue.  I am not on an M1 processor.

MacBook Pro (16-inch, 2019)

2.4 GHz 8-Core Intel Core i9

64 GB 2667 MHz DDR4

Hey, Guys!

Welcome to the Box Community!

Please try uninstalling Box Drive > restart your computer > reinstall Box Drive.

• To uninstall Box Drive: https://support.box.com/hc/en-us/articles/360044196293-Uninstalling-Box-Drive 
• To install: https://support.box.com/hc/en-us/articles/360043697474-Installing-and-Updating-Box-Drive

If the issue persist, please go ahead and submit a new ticket with our support team for further troubleshooting by clicking on the “Contact Support” link just above this page.

Hi, I can't submit a ticket because I keep getting referred to the IT support at my school. They say it is on your side. But I just wanted to say that the problem is still not solved. 

I get this error message:

Box Drive's system extension failed to load. Please make sure it has been enabled in System Preferences > Security & Privacy and then restart your computer. If the problem persists, please contact Box Support to further troubleshoot the issue.

I have done as it asks with no luck. I am using a 2018 Macbook pro, running MacOS 11.4. Everything worked until I updated to 11.4 yesterday. 

Thank you!

The above technique (uninstall, reboot, reinstall) resolved this for me.

Finally found a fix here:
https://iphonegeeks.com/google-drive-file-stream-not-working-on-macos-big-sur-fix/