vCenter Server 7.x
vCenter Server 8.x
Due to the product design, each export of events or tasks on vSphere Client is limited to 100.
To export more events, please use PowerCLI Get-VIEvent cmdlet with Start and Finish, or MaxSamples parameters as mentioned in KB 328221.
For more information on Get-VIEvent, please see Get-VIEvent in Developer Portal.