Fix macOS 10.15 Catalina Installation Error on VirtualBox on Windows PC

Fix Failed to Open Session For The Virtual Machine

While installing macOS 10.15 Catalina on VirtualBox on Windows PC, despite the other errors you may encounter with Failed to Open Session For The Virtual Machine. For more information when you click on the details, you will see ‘VT-x is not available’, in any case, you can’t install macOS. The solution is pretty much easy, all you have to do is to enable the Virtualization Technology from BIOS.

Step 1. Turn off your computer and hit the boot key of your computer.

Step 2. Head over to the Configuration Tab and enable the VT-d or virtualization technology.




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Rahila Munji

Rahila Munji is the Co-founder of She is a student in the IT department at the University of Mumbai. She is doing Blogging for over 5 years and worked with several websites such as WikiGain, Technig, and IntoGuide. I hope her expertise will be helpful to you.

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