This blog article is my another part of Resolved: HP ILO this page cannot be displayed ERR_SSL_BAD_RECORD_MAC_ALERT, I found few more servers which were pinging, able to telnet ILO ip port 80 and 443 (ssl), But still webpage was either can't be displayed or site can't be reached, tried following above article but no luck, This behavior is due to HP ILO (web service) is hung, to resolve it you have to reboot server by removing power cable and ILO network cable,
Draining power means you will require downtime or wait for maintenance window or approval. To avoid complete server reboot there is a quick solution restart ILO card instead using putty, connect to ILO directly, once it is connected successfully fire below commands. First command changes directly and second command restart/reset ILO card only (ILO has its own small bootable image with web server).
cd /map1
reset
If results are status=0 and status_tag=COMMAND COMPLETED, it is completed successfully. Monitor the ILO status by running continuous ping as while restart ILO connection will be lost, Once it is reachable try connecting ILO through browser in most cases it should be working..
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