This article covers how to protect your Mac with Sophos Home after installing or upgrading to macOS 11 Big Sur.

IMPORTANT - PLEASE READ THE STATUS SECTION TO UNDERSTAND WHAT WORKS AND WHAT IS NOT YET SUPPORTED ON MACOS 11 BIG SUR

Installation and current status 
Installation process
Current status
What is not yet working
Known Issues

Troubleshooting

Updating…message appears after upgrade/installation
Welcome to Sophos Home screen does not go away
com.sophos.endpoint.scanextension.systemextension cannot be found

Installing / Upgrading Sophos Home on macOS 11 Big Sur

BEFORE YOU BEGIN, PLEASE REVIEW THE STATUS SECTION

(Skip these 2 steps if Sophos Home is already installed).
If you do not have Sophos Home installed, download Sophos Home here
Run the installer and follow the on-screen prompts 
(Skip these 2 steps if Sophos Home is already installed).

After installing Sophos Home OR upgrading your current installation to macOS11 - Big Sur, there are 4 steps required to set up Sophos Home (if you are upgrading your existing installation, you will need to ensure steps 2 to 4 are completed / If you receive an Action Required message, see this section)

1 - Enabling System Extensions 
2 - Allowing Notifications
3 - Granting Full Disk Access to components by drag-dropping under Full Disk Access 
4 - Rebooting your Mac.

Please watch this video to see how to go about these steps: 

When Sophos Home starts, you may see an “Updating…” message:

This happens as soon as macOS 11 is loaded on a system that already has Sophos Home installed – This is expected, and the message will clear as soon as the update finishes. After that, you will be able to proceed with allowing notifications and clearing the welcome screen, as listed in the installation section.  
You may check the update status by clicking on the Sophos Home Shield ->…->Check for Updates
If the message  persists after waiting for an hour, uninstall Sophos Home and re-do the steps on this article to re-install. 

Current status - Updated December 2nd,  2020

Sophos Home v 10.0.1a1 has been released to provide improvements to the product update process on Macs that were upgraded to macOS Big Sur.

This build  supports: 
macOS 11 - Big Sur Official release
(Other macOS 11 beta versions are not currently supported). 

What's working - Updated December 2nd,  2020

Sophos Home v10.0.1a1 currently supports the following features on macOS 11 Big Sur 

• Real-Time Protection
• Ransomware protection
• Full System Scans
• Folder and external drivers scans
• Webcam and microphone protection
• Automatic Malware removal

What's not yet working -Updated December 2nd,  2020

• MTD - *Expected to be functional with the 10.0.2 Sophos Home release - January 2021
• Web Control - *Expected to be functional with the 10.0.2 Sophos Home release - January 2021
• Web Filtering - *Expected to be functional with the 10.0.2 Sophos Home release - January 2021

Known issues between Sophos Home and macOS 11 Big Sur - Updated December 2nd, 2020

• Since Web Protection is not yet working, expect to see a message on the Sophos Home Dashboard, stating Web Protection is disabled/device is vulnerable -  You will also see that the device is vulnerable on the Sophos Home dashboard
  - Web Protection is expected to be functional with the 10.0.2 Sophos Home release - January 2021
  
• Incoming SSH connections will fail if running Sophos Home v10.0.1a1 + MacOS 11 Big Sur.
• Time Machine backups to NETWORK locations are currently failing when Sophos Home is installed on Big Sur macOS 11 - This issue is currently under investigation by our development team. 

Additional troubleshooting

What to do if the Welcome to Sophos Home screen keeps appearing after completing the steps

First, ensure you are running Sophos Home 10.0.1a1 and one of the supported versions of macOS 11.

If the Welcome to Sophos Home screen keeps appearing after following the onscreen steps, you will need to manually add the com.sophos.endpoint.scanextension.systemextension  component to Full Disk Access.

***BEFORE YOU PROCEED***
If the com.sophos.endpoint.scanextension.systemextension is already listed in the Full Disk Access, you DO NOT need to add it again, ensure it is check-marked and then,  add the other components listed here. 
You will not be able to perform these steps until Sophos Home has fully upgraded

Either use the Welcome to Sophos Home screen or Click on the 
Apple logo -> System Preferences-> Security & Privacy 
Scroll down to locate Full Disk Access
Use the padlock at the bottom left to unlock changes 
Use the  '+' symbol to add new components
Search for com.sophos.endpoint.scanextension.systemextension 
component and click Open
Once added to the list, ensure it is check-marked 

After that, you should be able to click Done, and the Welcome to Sophos Home window should stop popping up. 

***IMPORTANT***
If the com.sophos.endpoint.scanextension.systemextension cannot be found on the Mac AND it is not already listed in the Full Disk Access list , please uninstall Sophos Home and re-do the steps on this article to re-install. 

If the Welcome to Sophos Home screen continues popping up after following the above steps, you may need to manually add additional components to the Full Disk Access , one at a time, and check-mark each one,  until all show up on the list :

com.sophos.endpoint.scanextension.systemextension 
Sophos Diagnostic Utility
SophosScanAgent
SophosCleanD
SophosServiceManager