What is AppleVirtualPlatformHIDBridge?

AppleVirtualPlatformHIDBridge (shown as Virtualization.AppleVirtualPlatformHIDBridge) is a process tied to Apple's virtualisation framework.

What is AppleVirtualPlatformHIDBridge?

AppleVirtualPlatformHIDBridge passes input from your keyboard, mouse, trackpad, or game controller between your host Mac and a virtual machine running through Apple's Virtualization framework. HID stands for Human Interface Device and covers all these input devices.

What does it do?

When you run a virtual machine using Apple's Virtualization framework, your keyboard and mouse input needs to reach the guest operating system. AppleVirtualPlatformHIDBridge takes input events from the host Mac and sends them to the virtual machine as virtual input device events that the guest can read.

When you type or click inside a virtual machine window, this process makes sure those inputs arrive correctly.

When does it run?

Only when a virtual machine built on Apple's Virtualization framework is running. Apps that use this framework include:

• UTM (when using Apple's backend instead of QEMU)
• Tart (for running macOS and Linux virtual machines)
• Custom apps built with Apple's Virtualization.framework

It does not run during normal Mac use without virtual machines.

Does it use many resources?

No. It forwards input events, which takes very little processing power.

Should you worry?

No. It is a normal part of Apple's virtualisation system that makes keyboard and mouse input work inside virtual machines.

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