⚡ Quick Answer
“Session Not Found” in Palworld almost always means the world or invite code you’re trying to join no longer exists or is unreachable — not that Palworld’s servers are broken. Common causes are an expired or mistyped join code, the host’s world being closed, multiplayer being switched off, or a local firewall/network block. Most players fix it in under five minutes by getting a fresh code from the host and verifying game files.
📋 TL;DR — Key Points
- The number “91” is a label some fan sites use for this error — it is not an official Pocketpair error code; the actual in-game message is simply “Session Not Found.”
- The single most common cause is a join/invite code that has expired, changed, or was mistyped (copy-pasting a stale code can trigger it even when typing the same code works).
- It also appears when the host’s world is closed, multiplayer is disabled in world settings, or the host’s session ended.
- Genuine Palworld server outages are rare — always check the official status page first to rule this out before troubleshooting your own setup.
- Solo/single-player worlds are never affected by this error.
Table of Contents
1. What “Session Not Found” Actually Means
“Session Not Found” is Palworld’s way of telling you that the multiplayer session you’re trying to reach — whether that’s a friend’s world via invite code, a community server, or an official server — isn’t currently reachable under that identifier. Some fan sites and guides refer to this as “error 91,” but that number is not an official error code published by developer Pocketpair; it’s simply a label used to make the error searchable. The message itself is what you’ll actually see on screen.
Players have reported this error most often right after a world reset (such as the Palworld 1.0 launch), when copy-pasting an invite code instead of typing it, or when a friend’s dedicated server has gone offline or been reconfigured.
2. Common Causes at a Glance
| Cause | How Common | Fix Location |
|---|---|---|
| Expired or mistyped invite code | Very common | Get a fresh code, type it manually |
| Host’s world closed / session ended | Very common | Host must reopen the world |
| Multiplayer disabled in world settings | Common | Host’s World Settings menu |
| Local firewall / network block | Occasional | Your PC/console firewall settings |
| Game installed on external/slow drive | Occasional | Reinstall to internal storage |
| Genuine server-side outage | Rare | Wait for Pocketpair / server host fix |
3. 6 Fixes That Actually Work
Try these in order
- 1. Get a fresh invite code and type it manually. Ask the host to regenerate the code, and type it in yourself instead of copy-pasting — several players confirm pasted codes fail even when the same code typed manually connects.
- 2. Confirm the host’s world is actually open. The host should check that the world is loaded, multiplayer is enabled in World Settings, and the session hasn’t ended.
- 3. Try a different server as a test. Join any official or community server to confirm your own client/network can connect at all. If that works but your friend’s world doesn’t, the problem is specific to their server, not your setup.
- 4. Restart your router and flush DNS. Power-cycle your modem/router, and on Windows run
ipconfig /flushdnsin Command Prompt. - 5. Allow Palworld through your firewall. Go to Windows Settings → Privacy & Security → Firewall & Network Protection and make sure Palworld-Win64-Shipping.exe is allowed on both private and public networks.
- 6. Reinstall to your internal drive. Multiple players report that moving Palworld from an external hard drive to internal storage resolved persistent session errors.
4. Rule Out a Real Server Outage First
Before spending time on local fixes, it’s worth ruling out a genuine outage. Check the official Palworld status page for the Official Servers and Server Lobby — if both show green with no active incidents, the “Session Not Found” error is very unlikely to be Pocketpair’s infrastructure and is almost certainly local to the code, the host’s world, or your network.
For a full breakdown of how to read Palworld’s live status and what counts as a genuine outage versus a local issue, see our companion guide: Are Palworld Servers Down? Live Status Check.
5. Frequently Asked Questions
What does “Session Not Found” mean in Palworld?
It means the specific world or invite code you’re trying to join can’t currently be reached — usually because the code expired, was mistyped, or the host’s session is closed, not because Palworld’s servers are down.
Is “error 91” an official Palworld error code?
No. “91” is a label used by some fan and guide sites to make this error easier to search for; Pocketpair’s in-game message is simply “Session Not Found” without a numbered code attached.
Why does pasting a join code fail but typing it works?
Some players have found that a pasted code can carry hidden formatting or a stale clipboard value, which returns “Session Not Found,” while manually typing the same characters connects successfully.
Does this error affect single-player worlds?
No. Since single-player worlds don’t rely on a hosted session, they are not affected by this error at all.
