Oracle VM VirtualBox is a free and open-source hosted hypervisor for x86 virtualization, developed by Oracle Corporation. Created by Innotek, it was acquired by Sun Microsystems in 2008, which was in turn acquired by Oracle in 2010. VirtualBox can be installed on the following operating systems such as Windows, macOS, Linux, Solaris etc.
When face with the problem above, in order to ascertain what the problem really is, it is advisable to click on the details button as shown above to reveal the actual issue. As it is right now, the problem is ambiguous.
As you can see above, this simply means the shared folder path on my device does no longer exist and this is true because I recently modified the path name.
See the following link on how to copy and paste between a host machine and VirtualBox VM. For other articles relating to VirtualBox, please see the link.
To fix this issue, launch the shared folder window and change the path to the OS as shown below
Use the drop down menu and select the right folder path as shown below
As you can see below, we have selected the right path and this error message will never be prompted again for this issue.
I hope you found this blog post helpful. If you have any questions, please let me know in the comment session.