An installation might not succeed when IaaS time servers are not synchronized with the vRealize Appliance and the Identity Appliance.
You cannot log in after installation, or the installation fails while it is completing.
Time servers on all servers might not be synchronized.
For each server (Identity Appliance, vRealize Appliance, and all Windows servers where the IaaS components will be installed), enable time synchronization as described in the following topics:
For an overview of timekeeping for vRealize Automation, see Time Synchronization.