Before you upgrade Windows, you must ensure that Virus and Spyware Protection definitions are from July 27, 2015, or later. Definitions as of this date include an update to the Eraser engine (126.96.36.199) that is required for Windows 10 compatibility.
You must uninstall earlier versions of Symantec Endpoint Protection. The operating system upgrade stops if it detects an earlier version of Symantec Endpoint Protection. See Uninstall Symantec Endpoint Protection for more information.
The following operating system upgrade paths are supported with 12.1.6 MP1 / MP1a or later installed:
Windows 8.1 to Windows 10
Windows 8 to Windows 10
Windows 7 to Windows 10
Limitations when upgrading from Windows 7 to Windows 10
Windows 7 does not include Early Launch Antimalware (ELAM). Therefore, the Symantec Endpoint Protection ELAM component is not enabled, and does not enable after you upgrade to Windows 10 with Symantec Endpoint Protection installed. Your protection level is the same as it was with Windows 7.
To allow Symantec Endpoint Protection to recognize ELAM and enable the Symantec Endpoint Protection ELAM component, you must uninstall and reinstall Symantec Endpoint Protection. You can also upgrade from 12.1.6 MP1 to the latest version of Symantec Endpoint Protection to recognize the ELAM component. Repairing the installation does not accomplish this task.
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