If you intend to upgrade your Mac to macOS High Sierra and keep using Parallels Desktop for Mac, we strongly recommend you upgrade to Parallels Desktop 13 for Mac.
Here is the list of known issues we are working on with the available workaround that we have tested in our lab.
|Cannot create a new Boot Camp VM.||Fixed in version 13.1.0|
|Cannot start an existing Boot Camp VM.||Fixed in version 13.1.0|
|Cannot install macOS High Sierra to a virtual machine with Apple File System type.||Fixed in version 13.1.0|
|Cannot install Kaspersky Internet Security for Mac on macOS 10.13 High Sierra.||No workaround.|
|Video artefacts when switching desktop spaces in Full Screen mode.||No workaround.|
|A VM installed from Mac Recovery partition cannot upgrade to macOS High Sierra.||No workaround.|
|Parallels Tools system extensions are blocked in macOS High Sierra VM.||In macOS High Sierra VM open System Preferences > Security & Privacy > General > click 'Allow'. See KB 124244|
|Cannot deploy Parallels Desktop to Macs with macOS High Sierra (host OS).||See KB 124289|