Failed to delete the snapshot Snapshot 1 of the virtual machine

[kingjacob280]

Failed to delete the snapshot Snapshot 1 of the virtual machine Windows 10 ToCopy.

Hard disk 'D:\Users\kingj\VirtualBox VMs\Windows 10 ToCopy\Snapshots\{98f158d3-9a45-4e49-bf5e-41776b862527}.vdi' has more than one child hard disk (2).

Result Code: E_FAIL (0x80004005)
Component: SessionMachine
Interface: IMachine {5047460a-265d-4538-b23e-ddba5fb84976}

Also I am getting errors while taking a snapshot of the running VM.

Version 6.0.10

only uploaded part of the log file as the full one is too big, if needed I can make a google drive link.

[ModEdit: Partial VBox.log removed]

[multiOS]

Part logs only provide part of the information that might be needed are only likely to produce part answers

'Zip' the full log and that should allow you to attach the whole thing

[scottgus1]

vdi' has more than one child hard disk (2)

Googling "has more than one child hard disk site:forums.virtualbox.org" takes me to this: viewtopic.php?f=1&t=49019#p222785

"More than one hard disk" means you have a branching snapshot structure, something like this :-

A---- First child of A (A1)
|
+---- Second child of A (A2)

You can't delete A without splitting into two independent VMs, and VBox currently can't do that.

This would have happened if at some point after creating A1 you restored (not reverted) the "A" state and then booted the VM. That would implicitly have created the 2nd child of A.

[socratis]

The VBox.log isn't relevant in this case, because you're not getting the error at runtime, you're getting the error while you're trying to delete a snapshot.

What's important in this case is the recipe of the VM, the ".vbox" file. Right-click on the VM in the VirtualBox Manager, select "Show in Explorer". ZIP the selected ".vbox" file and attach it to your response.