ISE 2.6 Patch 11 to 2.7 Upgrade Issue

[michael.armour.ctr1]

Trying to upgrade from ISE 2.6 patch 11 to ISE 2.7 and upgrade will not get past the upgrade pre-check.  All the checks timeout.  Even when I try to run the health checks, those timeout as well.  I am trying to run the upgrade from the GUI.  Trying to upgrade because ACAS states that our ISE devices are vulnerable for Log4j.  We have installed the log4j hotpatch.

[Arne Bier · Accepted solution]

You have installed the URT on the Standby Admin node, correct?  Are the application processes running normally? URT should not time out. If that is the case then perhaps reboot the Standby Admin Node and install the URT again after processes are all running again. If that also doesn't work then open a TAC case. Sounds dodgy.

[thomas · Accepted solution]

Call TAC.

[Marcelo Morais]

Hi @michael.armour.ctr1 ,

 beyond what @Arne Bier and @thomas  said, remember that ISE 2.7 supports restore from backups obtained from Release 2.2 and later., in other words, please try to install ISE from scratch in a new VM (ISE 2.7 P7) and restore the backup obtained from ISE 2.6 P11.

Hope this helps !!!