Sophos Cloud AV fails update on ML Engine

If you seeing this error "Failed to install sme64: general error" when trying to update.

It can be due to a recent change by Sophos in there SSL signing on the DLL.

RESOLVED Advisory: Sophos Central Windows devices - Sophos ML Engine installation failure

The root SSL is now from these guys

https://trusted-root-g4.chain-demos.digicert.com

If you are getting an SSL error on this website you will need to install the root SSL in to your OS and then try again to install the update and it should work.

Sophos AV Cloud Clear local update cache and force an update

1. Disable Tamper Protection
2. Press the keys Windows + R.
3. Type services.msc then press Enter.
4. Stop Sophos AutoUpdate Service.
5. Rename the following folders:
   C:\ProgramData\Sophos\AutoUpdate\Cache\decoded
   C:\ProgramData\Sophos\AutoUpdate\data\Warehouse
   
   to
   
   C:\ProgramData\Sophos\AutoUpdate\Cache\decoded_old
   C:\ProgramData\Sophos\AutoUpdate\data\Warehouse_old 
6. Delete the file SophosUpdateStatus.xml that is located at
   
   C:\ProgramData\Sophos\AutoUpdate\data\status.
   
   
7. Start Sophos AutoUpdate Service.
8. Open the Sophos Endpoint Agent user interface.
9. Click About followed by the Update Now button.
10. Once the update is completed, confirm the Last update time has changed and that it shows a green checkmark.

Note: These steps will trigger a pending reboot alert for Sophos once completed.

Sophos Endpoint Self Help: Update