从之前的ENS版本升级到10.5.5或10.6.1，则安装会陷入无限重启循环。
在日志中，您可以看到以下内容。
McAfee_Common_Bootstrapper.log:
05/02/2019 08:00:43.872 [3532] [BootstrapperMain] Common:Product version :10.6.1
05/02/2019 08:00:48.530 [3532] [BootstrapperMain] Check if installed common is 10.5.3, need to install a HF for 10.5.3 before upgrade
05/02/2019 08:00:48.530 [3532] [BootstrapperMain] Installed ENS Common Product Version : 10.5.3
05/02/2019 08:01:39.843 [3532] [BootstrapperMain] Utility to update ENS exp driver returned reboot required.
05/02/2019 08:01:39.858 [3532] [BootstrapperMain] Common failed during install or Upgrade!!!
McAfee_Update_Exp_Driver.log:
[+] MFEEPMPK_WORKAROUND - About to run ENS mfeepmk fixer utility
[+] MFEEPMPK_WORKAROUND - Faulty driver was found. Now attempting replacement
[+] MFEEPMPK_WORKAROUND - Old driver still running!
[+] MFEEPMPK_WORKAROUND - Reboot is required
[+] MFEEPMPK_WORKAROUND - About to disable ENS workaround. This will take some time.
[+] MFEEPMPK_WORKAROUND - Disabled ENS workaround
重新启动后，您会看到所有尝试都出现相同的失败点，并且McAfee_Update_Exp_Driver.log包含以下条目：
[+] MFEEPMPK_WORKAROUND - About to run ENS mfeepmk fixer utility
[+] MFEEPMPK_WORKAROUND - Checking for faulty driver existence
[+] MFEEPMPK_WORKAROUND - Old version of faulty driver was found.
[+] MFEEPMPK_WORKAROUND - Old driver file is flagged as DELETE_PENDING
[+] MFEEPMPK_WORKAROUND - Reboot is required
注意：工具
mfeempmk_utility内置于 ENS10.5.5和10.6.1的安装程序中，用于修复有故障的驱动程序。 更多信息，请参阅
KB90301。
