PlayStation Error Code CE-33945-4 — What It Means & How to Fix It

What Does This Error Mean?

CE-33945-4 means your PlayStation could not complete a download or installation. The file may have been interrupted, corrupted during transfer, or the storage is full. This error appears in the Notifications menu next to a failed download.

Affected Models

PlayStation 4
PlayStation 4 Slim
PlayStation 4 Pro

Common Causes

The internet connection dropped while the file was being downloaded
The downloaded file became corrupted before installation could complete
There is not enough free space on the hard drive to install the content
The PSN servers had a temporary problem delivering the file
A game disc update file failed to verify against Sony's servers

How to Fix It

Delete the failed download and try again. Go to Notifications > Downloads, find the failed item, press Options, and select Delete. Then restart the download from the Library or PlayStation Store.

Restarting a download from scratch is often all that is needed after a failed transfer.
Check your available storage space. Go to Settings > Storage > System Storage. You need at least as much free space as the file size, plus extra for installation.

Some games need up to double their size in free space during installation. Delete unused games to free up room.
Restart your PS4 and router before retrying the download. A fresh connection reduces the chance of another interrupted transfer.

Downloads are more stable on a wired Ethernet connection than Wi-Fi.
Try downloading the file at a different time. PSN servers are busiest in the evenings. Scheduling downloads for overnight or early morning often succeeds when peak-hour downloads fail.

You can set downloads to happen automatically in Rest Mode under Settings > Power Save Settings > Features Available in Rest Mode.
If a specific game keeps failing, try rebuilding the database. Boot into Safe Mode (hold power button for 7 seconds) and choose 'Rebuild Database.' Then retry the download.

Rebuilding the database organizes the file system and can fix issues that block installations.

When to Call a Professional

This error is a download or storage issue, not a hardware fault. You do not need a repair technician. If repeated download attempts all fail, contact PlayStation Support for help.

Frequently Asked Questions

Why does the same download keep failing at 99%?

Failing near the end usually means the file verification step is failing, not the download itself. This can happen if the PSN server sent a slightly corrupted file. Delete the download entirely and try again — the server will send a fresh copy.

Can I download games in Rest Mode?

Yes, and it is the best way to download large games. Go to Settings > Power Save Settings > Features Available in Rest Mode and enable Stay Connected to the Internet. Your PS4 will download in the background while powered off.

Does deleting a failed download delete my game saves?

No. Game save data is stored separately from the game application. Deleting a failed download only removes the incomplete game files. Your saved progress is unaffected.