When you try to connect to ILO, you get an error message stating “Connection with iLO cannot be established.”
If any changes was made to the network configurations, you may need to refresh this page to re-negotiate an SSL connection after latest SPP update.

Clear IE cache first if still same issue open the iLO in putty and reset the iLO with below CMD.

Putty — > SSH ILO –> run –> Reset /map1

This issue was fixed on below listed firmware.
HPE Integrated Lights-Out 5 Firmware version 1.30 (or later).
HPE Integrated Lights-Out Moonshot Firmware version 2.60 (or later).

Thanks,
WintelAdmin

Connection with iLO cannot be established.