Problem with Guest Additions Kali Linux

[WantedStarling]

Hello, I am facing a problem with installing the Guest additions on Kali Linux. I get the error below. On the Windows 10 VM I didnt have any problem, it installed without any error.

Unable to insert the virtual optical disk D:\Virtual Box\VBoxGuestAdditions.iso into the machine Kali Linux.
Could not mount the media/drive 'D:\Virtual Box\VBoxGuestAdditions.iso' (VERR_PDM_MEDIA_LOCKED).
Result Code: E_FAIL (0x80004005)
Component: ConsoleWrap
Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}
Callee: IMachine {85cd948e-a71f-4289-281e-0ca7ad48cd89}

Thank you for your time

[andyp73]

Either there is already something in the virtual optical drive (possibly still the Kali Linux installation iso) or the VBoxGuestAdditions.iso is already inserted into a different VM.

-Andy.