CN - Mac - Known Issues in Big Sur


  • Is macOS Big Sur recommended for Community Network computers?
  • Should I upgrade to Big Sur?


  • Employee or Student Employee
  • Community Network-supported computer


Big Sur was released on November 12, 2020. It will ship on new computers from Apple.

Community Network supports Big Sur, but we do not recommend upgrading late 2013 and mid-2014 13-inch MacBook Pros (see below for details).

For a list of Mac models that support Big Sur, see:

Before you upgrade, make sure you backup your Mac.

Known Issues with macOS Big Sur:

Tested Software That Does Work with Big Sur:

  • Zoom: Version 5.4.3 of Zoom seems to work well on Big Sur. Earlier versions of Zoom may also work, but upgrading is recommended.
  • Cisco AnyConnect VPN client: Big Sur requires Cisco AnyConnect version 4.9.04043 or higher. Earlier versions of AnyConnect will not work on Big Sur. The AnyConnect installation may also require additional steps to allow system extensions.
  • Anti-virus: Microsoft Defender for Endpoint is compatible with Big Sur. Community Network customers can contact the Service Desk for assistance installing antivirus software. Other departments should contact their IT support team.