I've run into this issue a few times recently - the endpoint installer 'fails' but the only thing that fails to install is the user interface. Naturally, this means that it registers in Sophos Central, scans fine, and basically 'works' ...you just can't disable tamper protection. On the previous one I ran into this with I had the client bring the computer to our office so we could use safe mode to get rid of Sophos and reinstall it, but the one I just ran into this on is several states away. Anyone else been running into this lately? I've got the log file of the latest failed install if needed.
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