I have the same error.
The /etc/applmgmt/appliance/software_update_state.conf file however shows "UP_TO_DATE"
After removing the file /etc/applmgmt/appliance/software_update_state.conf it is recreated and still shows "UP_TO_DATE"
Following KB 2147284 VMware Knowledge Base does not help.
VAMI shows that an update is available
I opened a Support Request with VMware (SR# 20155337309)
I got an answer from support:
As per release notes from 7.0 b and 7.0 c we still have this issue ongoing and the internal teams are working on a fix:
Currently there is no resolution and the alternative/workaround is to perform it from VAMI or using the developer options.
So , we have 7.0.1 and nothing changed ,Update planner and Interoperability still spews out "Unexpected error occurred while fetching updates" , anyone have any update regarding this ?
From 7.0.1.00000 to 7.0.1.00100 upgrade failed (again).