There is a particular issue if your server has a US language setting. When you try a sync DTRACE the EVMonitoring process. When it has failed take a look and see if you see something along the lines of:-
(EVMonitoring) <4344> EV-H {ContentCacheAssembler.BuildFailed} Exception: String was not recognized as a valid DateTime. Info: Diag: Type:System.FormatException ST: at System.DateTimeParse.Parse(String s, DateTimeFormatInfo dtfi, DateTimeStyles styles)|
If you are getting this specific error then there is an EV8 SP1 hotfix available so you would need to log a support case to request the hotfix. Quote ETRACK 1636887