由于系统中安装了旧版 McAfee 产品（包括SiteAdvisor Enterprise或VirusScan Enterprise），因此无法安装 ENS。 有关 ENS 在 ENS 安装过程中尝试删除的产品列表，请参阅
KB85522- 安装后可删除的第三方Endpoint Security产品。
McAfee_Common_Bootstrapper_*.log包含与以下内容类似的错误：
注意：此示例显示未能删除事件SiteAdvisor Enterprise3.5.
10/06/2016 08:21:46.729 [6600] [BootstrapperMain] Uninstall String found for {C44506FC-B846-4782-AC2B-8C30236CE075}
10/06/2016 08:21:46.744 [6600] [BootstrapperMain] Unlock SAE service was attempted but not successful
10/06/2016 08:21:46.744 [6600] [BootstrapperMain] Uninstalling Source Product McAfee Site Advisor Enterprise 3.5
10/06/2016 08:21:46.744 [6600] [BootstrapperMain] msiexec.exe /x{C44506FC-B846-4782-AC2B-8C30236CE075} /qn /l*v "C:\Users\admin\AppData\Local\Temp\\McAfeeLogs\McAfee_Endpoint_Security_Migration_McAfee Site Advisor Enterprise_3.5_10062016082146744.log" /norestart
10/06/2016 08:21:52.228 [6600] [BootstrapperMain] PROCESS return code : 1603
10/06/2016 08:21:52.244 [6600] [BootstrapperMain] Cannot uninstall Source Product McAfee Site Advisor Enterprise 3.5
