Microsoft Windows 8 will be officially supported by Communicator for Windows in ShoreTel 13.2 and greater.
Installing or upgrading Communicator for Windows with previous releases on Windows 8 may fail, and the client installer will roll back. There is no reliable work-around as of now. We recommend to use Communicator for Web as an alternative to Communicator for Windows on Windows 8.
Internet Explorer 10
When using IE 10 to create a new user via Director can corrupt the ShoreTel configuration database.