Brawl Stars Server Error 43 Explained: Causes and Possible Fixes

Long-time Brawl Stars players have likely encountered Server Error 43 at some point. This issue can abruptly remove players from matches or erase progress mid-game, often without a clear explanation. While it may initially seem like a simple connection problem, the error can actually be caused by several different factors.

What Is Server Error 43 in Brawl Stars?

Server Error 43 occurs when the game fails to properly sync data between a player’s device and Supercell’s servers. This disruption can happen during gameplay, at the end of a match, or even while loading into the game.

If the error appears during a match, the session is typically canceled. In most cases, players neither gain nor lose trophies, and the match does not appear in the battle log.

Why Does Server Error 43 Occur?

There are two main reasons behind this issue:

• Connection Problems: An unstable or weak internet connection can interrupt communication with the game servers, triggering the error.
• In-Game Bugs: Certain brawler abilities or interactions may cause crashes that affect all players in a match. When this happens, everyone is returned to the home screen. High server load during updates or special events can also increase the likelihood of this error.

How to Fix Server Error 43

Several steps may help resolve the issue:

• Restart the game by fully closing and reopening the app
• Check for updates and install the latest version from the app store
• Clear the app cache (on Android devices)
• Switch between Wi-Fi and mobile data
• Check server status using platforms like Downdetector

If the problem occurs frequently and affects multiple players at once, it is likely caused by the game itself. In such cases, the only solution is to wait for an official fix from Supercell.

Developers typically address these issues through maintenance updates, which may last around 20–30 minutes. While Server Error 43 can be frustrating, understanding its causes helps reduce confusion when it occurs.

If you liked this explainer, then check out our coverage on Brawl Stars Pin Maker Ideas.