Note: The vSphere Flash-based Web Client is deprecated starting vSphere 6.7 and have minimal options.
Note: You can use the events log to troubleshoot issues, particularly when trying to determine a timestamp.
To export the events log from flash based vSphere Web Client:
Running the vm-support command in a console session on ESXi/ESX hosts.
The command-line vm-support utility is present on all versions of VMware ESXi/ESX, though some of the options available with the utility differ among versions, see vm-support” command in ESX/ESXi to collect diagnostic information (1010705).
Running vc-support in a console session on VCenter 6.0 or later using the command line.
The command-line vc-support utility is present on all versions of VMware VCenter, though some of the options available with the utility differ among versions, see Collecting diagnostic information for VMware vCenter Server 4.x, 5.x and 6.x (1011641).
For the procedures to upload diagnostic information to VMware, see Uploading diagnostic information for VMware (1008525)
VMware Skyline Health Diagnostics for vSphere - FAQ
To simplify and expedite the log upload process, we recommend using the Log Assist feature of VMware Skyline, which (with your permission) automatically uploads log files. Skyline is available to all Production Support and Premier Services customers. To get started with Skyline, visit: http://vmware.com/go/skyline/download.
Note: You can also you use the Log Browser feature in the vSphere Web Client to view, search, and export one or more vCenter Server or ESXi log files. For more information, see Using the Log Browser to view, search, and export Logs for troubleshooting (2032888).
Uploading diagnostic information for VMware
Using the Log Browser to view, search, and export Logs for troubleshooting
vSphere Web Client を使用して ESXi/ESX ホスト および vCenter Server の診断情報を収集する
使用 vSphere Web Client 为 ESX/ESXi 主机和 vCenter Server 收集诊断信息
Coletando informações de diagnóstico para hosts ESX/ESXi e o vCenter Server com o vSphere Web Client
Recopilar información de diagnóstico para hosts ESX/ESXi y vCenter Server mediante vSphere Web Client
Erfassen von Diagnoseinformationen für ESX/ESXi-Hosts und vCenter Server über den vSphere Web Client