The short answer
Usually, after a check. Might hold something you care about. Look inside before removing it.
What is it?
Instruments, samples, presets and clips installed by Ableton Live: the Core Library plus the optional packs included with your edition. With every Suite pack installed, this can take tens of GB.
Instrument and sample packs installed by Ableton Live. Can be downloaded again from your Ableton account.
What happens if you delete it?
Uninstalled packs can be downloaded again from Live’s Packs section or your Ableton account. Sets that use them show missing samples until you reinstall.
How to remove it properly
In Live’s browser, open Packs and use a pack’s context menu to uninstall it (wording varies by version). To free internal space without removing anything, change the pack installation folder to another drive in Live’s Settings › Library.
From the app itself: Ableton Live > Browser > Packs: uninstall packs you don't use.
Before you delete it
Before removing packs that an important Set relies on, use File › Collect All and Save so its samples are copied into the project.
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
Can I delete Ableton Live Factory Packs?
Usually, after a check. Might hold something you care about. Look inside before removing it. Uninstalled packs can be downloaded again from Live’s Packs section or your Ableton account. Sets that use them show missing samples until you reinstall.
Will Ableton Live packs come back after I delete it?
Yes. Uninstalled packs can be downloaded again from Live’s Packs section or your Ableton account. Sets that use them show missing samples until you reinstall.
How do I remove Ableton Live packs properly?
In Live’s browser, open Packs and use a pack’s context menu to uninstall it (wording varies by version). To free internal space without removing anything, change the pack installation folder to another drive in Live’s Settings › Library.