Dennis C Davies 0 Posted December 30, 2020 Share Posted December 30, 2020 I have just purchased new license for both this Mac and my Win 10 laptop. I have not tried to install the Mac ESET because I do not see this older OS version included in description of this ESET update. Given my investment in expensive audio and video hardware that do not have drivers for anything beyond this OS is why I cannot upgrade OS. Sharing of relevant experience or helpful opinions will be much appreciated. Link to post Share on other sites
Administrators Marcos 3,662 Posted December 30, 2020 Administrators Share Posted December 30, 2020 I'm not sure if the latest version of ECS would run on v10.9.5 at all or if it's just that it was not tested on old Mac OS and therefore we don't support it. You can try installing it but we won't be able to provide support if you encounter issues. In such case I'd contact the distributor who sold you the license and ask for a refund for the ECS license if upgrading to a newer Mac OS is not possible. Link to post Share on other sites
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