This article describes the issue when you install FOE and receive the following error during the installation:
FOE installation failed checks last boot time failed
FOE version 6.0 and later
This issue occurs when Last boot time : Critical : Primary server has not been restarted since xx/xx/xx. It is recommended that the server is restarted prior to installing FOE to ensure that there are no pending reboots required as a result of installing hotfixes, upgrade and other softwares.
Reboot the Primary server and continue the FOE installation. This resolves the issue.