End user browses the vCenter welcome page in traditional Chinese locale, but the welcome page is shown in English.
vCenter 8.0.x
Under /etc/vmware-vpx/docRoot/ , there are some sub-folders for each locales.
en/ is for English, and zh_TW is for traditional Chinese.
In each of these sub folders, there is a welcomeRes.js file.
For some reasons, the welcomeRes.js file under zh_TW folder has been overwritten by the file under en/ folder.
Find a good vCenter, download the file /etc/vmware-vpx/docRoot/zh_TW/welcomeRes.js,
then upload this file to the problematic vCenter, replace the file /etc/vmware-vpx/docRoot/zh_TW/welcomeRes.js,
refresh vCenter welcome web page, now it is shown in correct language.