Sony names this code but does not publish the wording it prints on screen, so we quote only the code itself: WS-116449-5. Any site showing you an exact message for it has written one.
When you see this one, the problem is most often on the operator's side and there is nothing on your machine to fix. Check the live status first.
Sony's explanation is unusually direct: this service is currently under maintenance, and may be undergoing maintenance. They follow it by telling you to check the server status page.
Note the precise wording, because it matters. Sony says “this service”, not PlayStation Network as a whole. The code can point at one component being down — the Store, profiles, a specific service — rather than the entire network. So the rest of your console may work fine while this persists.
Sony does not publish the on-screen wording for this one, only the code.
Nothing to diagnose on your side. Check the live status above: if PSN is reporting an issue, you have your answer. If it looks healthy, the affected service may be narrower than the status page covers, and the remaining steps are worth a try.
Operator documentation: www.playstation.com. This is a PS5 code. It does not appear in Sony's PS4 index. Of the PSN codes we have verified, this is the only one whose official explanation is maintenance outright, which makes it the most reliable one to trust when you see it.
Sony's explanation is unusually direct: this service is currently under maintenance, and may be undergoing maintenance. They follow it by telling you to check the server status page.
When you see this one, the problem is most often on the operator's side and there is nothing on your machine to fix. Check the live status first.
Start with: Check status and wait. This is the answer Sony's own page gives. During maintenance nothing on your console changes the outcome.