The short answer
Usually, after a check. Might hold something you care about. Look inside before removing it.
What is it?
The Claude desktop app uses a small Linux virtual machine as a sandbox for running code and working with files in some features. Its disk images live in ~/Library/Application Support/Claude/vm_bundles and take about 10 GB.
The virtual machine Claude uses to run code (about 10 GB). Claude recreates it the next time it is needed, which takes a few minutes.
What happens if you delete it?
Claude recreates the virtual machine the next time a feature needs it, which takes a few minutes and a download. Your conversations are stored in your account, not here.
How to remove it properly
Quit Claude, then move the folder to the Trash in Finder (Go › Go to Folder… ~/Library/Application Support/Claude/vm_bundles).
Quit the app that uses it, then move it to the Trash. Empty the Trash when you’re sure.
Before you delete it
Files created inside the sandbox that you did not save elsewhere may be lost.
How MoreRoom helps
MoreRoom recognises this item and labels it “Review first”: it shows what’s inside, its size and last use, so you can decide. Nothing is removed without your say, and everything goes to the Trash first, with Undo.
Frequently asked questions
Is it safe to delete Claude’s vm_bundles folder on Mac?
Usually, after a check. Might hold something you care about. Look inside before removing it. Claude recreates the virtual machine the next time a feature needs it, which takes a few minutes and a download. Your conversations are stored in your account, not here.
Will Claude desktop sandbox VM come back after I delete it?
Yes. Claude recreates the virtual machine the next time a feature needs it, which takes a few minutes and a download. Your conversations are stored in your account, not here.
How do I remove Claude desktop sandbox VM properly?
Quit Claude, then move the folder to the Trash in Finder (Go › Go to Folder… ~/Library/Application Support/Claude/vm_bundles).