Now that we have been through the potential causes of the said error, let us move on to the solutions that you can apply to get rid of the error.

In such a case, you will have to either update some VirtualBox host modules. Linux Kernel Update - For the Linux users out there, the issue often appears when they update their Linux Kernel to a more latest release that is available for grab.In such a case, an easy and quick fix to the issue is reinstalling the software. Corrupted Installation Files - As it turns out, in some cases the error can be caused due to corrupt files in the VirtualBox installation directory.If you leave a VM in a saved state, it can often cause the NS_ERROR_FAILURE error in which case you will have to discard the culprit VM to resolve the issue. Virtual Machine Saved State - Saved state is a feature that is available in all of the virtualization providers these days.If this is applicable to you, you will have to remove Duet Display to fix your issue. Duet Display is an application that is used to achieve the said task.

Using Duet Display - If you are using a third-party software to increase your number of displays, it can cause issues with VirtualBox even if you use it rarely.

Uninstall virtualbox storage