Fix VirtualBox macOS High Sierra Screen Resolution. It’s a common problem for those who installed macOS Sierra or macOS High Sierra on Virtualbox on Windows. Right after the installation part finishes then you will notice that your resolution is not fitting your screen on the host.

To work around this behavior, set Outlook to be the default application in Apple Mail preferences. To do this, follow these steps: Run the Mail application. On the Mail menu, click Preferences. Click the General tab. For Default email reader, select Microsoft Outlook. In Outlook 2016 I have two email accounts one is a POP/SMTP (set as the default in Account Setting) and the other is a Microsoft Exchange account. Both of the have populated People/Contacts. I'm using Word 2016 to print mailing labels from selected people in the POP/SMTP contacts.

Oracle's VirtualBox hypervisor runs as an application on your OS X devices, allowing you to can run a virtual machine inside the application. You can specify how much disk space to give to that virtual machine, and load another operating system on it. There are two post-installation configuration issues you might run into: getting VirtualBox to play nicely with modern screen resolutions -- especially with Retina Display devices -- and increasing the amount of disk space allocated to a given VirtualBox instance on your computer.