Upgrading a VMware ESXi host fails with the error: Cannot run upgrade script on host

[deepaksel]

I am trying to upgrade a Esxi host from 5.5 U2 to U3 through Update Manager but while doing remediation i am getting error "Cannot run upgrade script on host".

Found below KB and able to find the logs as specified. But i am not able to find any state file in the bootbank and altbootbank.

Upgrading a VMware ESXi host fails with the error: Cannot run upgrade script on host (2007163) | VMw...

Can anyone suggest me what to do next?

[virtualg_uk]

Can you post the following log form your ESXi host?

/var/log/esxupdate.log

[sikkanther]

Hi,

Try to uninstall the FDM agent on the esxi host and check free space available on the local datastore on the esxi server.

[vervoortjurgen]

instead of using update manager you can also boot from the iso image and upgrade

if you get the same error then do a clean install but preserve the datastore and add back to vcenter server.