An Xbox Series X that is full has Microsoft's plain rule to plan around: games optimized for the Series X|S must be installed on the internal SSD or on the Storage Expansion Card, so a USB drive can hold them but not run them. Free space by uninstalling what you are not playing, because saved data syncs online and returns when you reinstall; use Manage game and add-ons to drop DLC you do not use; or add a Storage Expansion Card, which performs identically to the internal SSD. A USB drive works for Xbox One and older games and for parking optimized games between plays.
Differential
Likely causes of “Xbox Series X|S storage is full or games will not install”, and how to tell them apart
- 1
The internal SSD is simply full of games
What separates it You cannot install a new title and Storage devices shows the internal drive nearly full
How to confirm Open Profile and system, Settings, System, Storage devices, choose the drive and View contents to see what each game uses
- 2
Optimized games parked on a USB drive
What separates it A Series X|S game shows as installed but will not play, and it sits on an external drive
How to confirm Move it back to the internal SSD or the Storage Expansion Card, as Microsoft says optimized games must be installed there to play
- 3
An external drive that does not meet the requirements
What separates it The drive is treated as media storage or does not appear
How to confirm Check it is USB 3.0 or later, 128 GB or more, partitioned, and that no more than three storage devices are attached
- 4
A Storage Expansion Card that is not seated
What separates it The card is not listed under Storage devices because a Storage Expansion Card is not seated
How to confirm Remove it, wait 30 seconds, and reinsert it firmly into the storage expansion slot on the back; if it is still missing, restart with it removed and insert it again
- 5
Add-ons and unused content taking room
What separates it Games are few but the drive is full of large add-on data
How to confirm Use Manage game and add-ons and unselect add-ons you do not use; items under More add-ons take no console space
Before you touch a setting
Record this first — changing settings destroys the evidence
- The free space shown for each drive under Storage devices
- Whether you use a Storage Expansion Card or a USB drive, and its size and make
- Which games are largest and whether they are Optimized for Xbox Series X|S
- The console: Series X, Series X Digital or Series S, and its internal capacity
Try in this order
0 of 8 completedRead what is using the space
ReversiblePress the Xbox button, choose Profile and system, Settings, System, Storage devices. Each drive shows the percentage used and the free space; choose a drive and View contents to see how much each game uses.
Uninstall what you are not playing
ReversibleHighlight the game in My games and apps, press the Menu button and choose Uninstall. Microsoft says preferences and saved games sync online, so reinstalling brings them straight back.
Trim add-ons
ReversibleChoose Manage game and add-ons, select the game, unselect the add-ons you do not use and Save changes. Add-ons under More add-ons need no local space.
Use smart storage
ReversibleIn the Free up space screen, Xbox suggests items that are good choices to remove. You can accept its choices or pick your own and choose Remove selected.
Add a Storage Expansion Card
ReversibleRemove the protective cover and plug the card firmly into the slot on the back. Take the console's first update before you connect it. It adds 512GB, 1TB or 2TB, works on Series X|S only and performs identically to the internal SSD.
Set up a USB drive for older games
ReversibleUse a USB 3.0 or later drive of 128 GB or more. The console will format it, so back up first. Xbox One, Xbox 360 and original Xbox games can play from it; Optimized games can be stored but must move back to play.
Move or copy games
ReversibleIn My games and apps, See all, Games, highlight a game, open the game box in the upper right, tick the items and choose a drive, then Move selected or Copy selected.
Fix a card or drive that is not detected
ReversibleUpdate the console, restart, reseat the card or try another USB port. If you use Sleep mode, open Power options and untick the setting that turns off storage when the console is off.
Model-specific
What is true of this model and not of its siblings
- Series X and Series X Digital
- 1TB custom NVMe SSD on both. The Series X has a disc drive and the Series X Digital has none; the storage steps are the same for both.
- Storage Expansion Card slot
- The slot is on the back of the console and takes the card only when it is fully seated; Microsoft says to remove the protective cover first.
- Tools and supplies
- A USB 3.0 drive of 128 GB or more, a Storage Expansion Card if you add one and a towel to rest the console on. No screwdriver is needed; the card plugs in.
- Support details
- Give Microsoft the four-digit console model number (1882 for the Series X) and the drive's make; not a part number.
Stop boundary
When this stops being a self-service repair
- !If the console still does not see a correctly seated Storage Expansion Card after a restart, contact Xbox support
- !If a game shows as corrupted after a move, uninstall and reinstall it and contact support if it repeats
- !If an external drive is not detected on any port after the steps, try it on a computer to check whether the drive itself has failed
Evidence ledger
Sources behind this answer
Where the manufacturer's article stops. Microsoft does not endorse a USB drive make in these pages, so this page lists requirements only. The Series S has a separate storage page because its internal SSD is smaller and its resolution target differs.
Out-of-warranty service fee chart by device.
Storage devices, uninstalling, moving games and drive setup.
Card setup, compatibility and troubleshooting.
External drive requirements.
Exact questions
Common questions
Can I play Series X games from a USB drive?+
Not the optimized ones. Microsoft says Optimized for Xbox Series X|S games must be on the internal SSD or the Storage Expansion Card to play; a USB drive can store them.
How much can a Storage Expansion Card add?+
512GB, 1TB or 2TB. Microsoft says it performs identically to the internal SSD and works on Series X|S only.
Do I lose saves when I uninstall a game?+
Microsoft says preferences and saved games sync online, so when you reinstall a deleted game your saved data comes back.
Can the card be used on more than one console?+
Yes. Microsoft says you can take it out and use it on other Series X|S consoles; sign-in or the game disc is needed to play.
How much internal storage does a Series X have?+
1TB of custom NVMe SSD, with some reserved for the system. Microsoft notes that even with no games installed, some space is not available.
Why does the console say my drive is not detected?+
Check the requirements, update the console, reseat the drive, try another USB port and confirm Sleep mode is not turning storage off.