REC007
VMware Employee
VMware Employee

I have also faced the same issue when I was performing the migration from vCenter 5.5 to VCSA 6.5.

Since in VCSA 6.5, Update manager is bundled with vCenter, You can can disable Update Manager from MOB page & proceed for migration.

You can follow below troubleshooting steps.

1) Take a snapshot of Vcenter machine

2) Stop Update manager service & disable the UM plugin

3) Remove the UM extension from vCenter MOB page by following below VMware KB article

VMware Knowledge Base

4) Extension for UM : com.vmware.vcIntegrity

Hope this helps!!

Thanks!