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Slay the Spire 2 · Troubleshooting Guide · Can't Log In

How to Fix Slay the Spire 2
Login Issues

If you can't log into Slay the Spire 2 or keep getting kicked back to the login screen, follow these steps. First check whether Mega Crit's servers are down — server outages are the most common cause of login failures.

General Guidance Only

These steps are provided for informational purposes only and may not reflect the latest game updates. Port numbers, menu paths, and settings can vary by platform and version. GamerOutage.com is not responsible for any outcomes resulting from following this guide. When in doubt, refer to the publisher's official support site.

Step-by-Step Fix

1
Check Steam login status
Slay the Spire 2 uses Steam for authentication — there is no separate STS2 account. If Steam is down or you're offline, the game may fail to launch. Check steamstat.us and ensure you're logged into the Steam client.
2
Restart Steam
Close Steam completely (Steam menu → Exit), wait 30 seconds, and reopen it. Sign back in to your Steam account. A stale Steam session is the most common cause of launch authentication failures.
3
Launch Steam as administrator
Right-click the Steam shortcut → Run as administrator. Then launch Slay the Spire 2 from your Steam library. This resolves permission errors that prevent Steam from authenticating the game.
4
Go online in Steam
Click Steam in the menu bar → Go Online. If Steam is in offline mode, some games require online verification to launch, especially after updates. Going online forces Steam to verify your license.
5
Clear Steam download cache
In Steam: Settings → Downloads → Clear Download Cache. This removes corrupted cache data that can prevent game launches and authentication.
6
Verify game ownership
In your Steam library, confirm Slay the Spire 2 appears as an owned game. If it shows as "Early Access" with a purchase button, you may not own it or it may have been removed from your library. Contact Steam support if the game disappears from your library.
Is it server-side?
Check real-time player reports — if reports are spiking, it's on Mega Crit's end, not yours.
Check StS2 Status →

Frequently Asked Questions

Why won't Slay the Spire 2 launch from Steam?

Launch failures are caused by Steam authentication errors, corrupted game files, or a conflicting mod. Restart Steam, verify game files (right-click → Properties → Local Files → Verify integrity), disable all mods, and try again.

Slay the Spire 2 says "App not available" on Steam — what does that mean?

This error usually means Steam's licensing servers are temporarily unavailable, or the game file is corrupted. Restart Steam and try again. If it persists, clear the Steam download cache in Steam Settings → Downloads.

Can I play Slay the Spire 2 offline?

Yes, STS2 supports Steam offline mode. Launch Steam in offline mode (Steam menu → Go Offline), then launch the game. Cloud saves won't sync until you go back online, but your local save files are preserved.

More Slay the Spire 2 Fix Guides

StS2 Lag Fix →StS2 Crash Fix →StS2 Can't Connect →
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