Moved provisionally to ePO for better support.
Hi marcintrzepizur, can you still login onto ePO? If so you'll have to reinstall McAfee Security for Exchange 8.0 extension or delete it if you are not using this product.
As for repositories you have to modify the McAfee Agent repository policy to only enable ePO's repository and disabling HTTP one
I've uninstall this extensions and problem is solved.
Also I've corrected my default repository policy for agent.