VirtualBox and the Virtual Machines were working fine, but then stopped working after upgrading macOS (to Catalina and newer).New installations of VirtualBox on newer macOS will install successfully, but attempting to run a Virtual Machine will fail.The reported issue is happening in at least two circumstances:

Multiple people have reported VirtualBox having a variety of issues running VirtualBox and its Virtual Machines on macOS (Catalina and newer). Still Experiencing Problems? Symptoms of the VirtualBox macOS Security and Access Problem SOLUTION 3: Clean Re-install of VirtualBox.SOLUTION 2: Modify VirtualBox Permissions.SOLUTION 1: Allow Identified Apps to Access the System.Symptoms of the VirtualBox macOS Security and Access Problems Carleton Research Studies Seeking Participants.Awards, Scholarships, Jobs, and Volunteer Opportunities.Data Science Specialization, Human-Computer Interaction, Data Science & Analytics.Ottawa-Carleton Institute for Computer Science (OCICS).

Honours Project/Thesis and Directed Studies.Important Information for First Year Students.Prospective Graduate Students: COVID-19 Information.Zipped log file attached - after the above changes were made and I've shut down the VM.Įven going to click the Windows home button to power down is very very very slow.Īny suggestions how I can improve things? I've restarted the host now and was excited but it's exactly the same. I've since changed some settings on the VM:Īnd 'Use Host I/O Cache' for the SATA controller It's been like this for some while and I've just ignored it.ĭecided to dive in a bit more to it today and found this forum.

Periodically while using the Windows app, it stops responding. Starting the Windows VM take an age and then actually starting the app similarly takes a long time. The iMac host is a 2014 iMac running OSX 10.15.7. I've been using VBox for a while to run a Windows 10 VM for an old finance app I use in Windows.

Macos virtualbox slow