Your policies are probably setup where client gets the updates after a random wait.
It has been three days now and still no update the DAT file on the client machine.
I have attached a copy of the Agent Monitor log. Any idea which sections control the DAT update?
Under Menu>System Tree>Assigned Policies I select VirusScan Enterprise 8.7.0 as the Product but I don't see any DAT policy listed in Category. Under Client Tasks I see Update Clicnet Protection with the Schedule set for Daily (Configuration is set for All Packages, Schedule is set for daily, no end date, repeat between 10 AM and 1 PM, every 1 hour every day).
Agent_Monitor.log.zip 1.5 K
I see the following;
"Unable to find a valid repository" and "Checking update packages from repository McAfeeHttp"
Looks like its failing to find internal repositories so it falls back to Mcafee web dat repo.
On that client I would check what sites it has - Virus Scan console > Tools > Edit repository list. You should see atleast your main epO server and the Mcafee fail over site in there.
Client updates through ePO are defined by tasks, not policies.
But before then you need to get the dats into the master repository,
There's a bunch of very useful tutorial videos on the McAfee Service Portal website.
Follow the link for 'Video Tuorials' selecting ePO 4.5 as your product of choice.