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If you see Server Error 43 after a Brawl Stars Duels match, the specific cause of the current report has not been confirmed by an official notice. Supercell’s historical notes show that different bugs have produced the same error code, so they do not establish one universal meaning or diagnose today’s Duels issue.
What is confirmed about Server Error 43?
Supercell has documented Server Error 43 in several separate, game-side bugs. The examples involved different modes and mechanics; they do not show that the Duels report has the same cause.
- May 20, 2020: Supercell’s maintenance notes said, “Fixed a bug that caused server error 43 in Boss Fight.” Supercell’s May 20, 2020 maintenance notes.
- December 16, 2020: Supercell said it “Fixed Server Error 43 when Carl died mid-air while flying with the Flying Hook Gadget.” Supercell’s December 16, 2020 maintenance notes.
- June 16, 2021: Supercell said it “Fixed an issue with the new Map Maker slowing tiles that sometimes caused the Brawlers to gain a lot of speed or terminate the match with server error 43.” Supercell’s June 16, 2021 release and maintenance notes.
A Brawl Stars Wiki version-history entry also lists “Fixed a server error after playing Duels and using Sprays.” That is secondary, community-maintained evidence, and its date is not established in the returned result. It does not confirm that this is the same issue players are reporting now or that Supercell has announced a current resolution. Brawl Stars Wiki version history.
Is the current Duels issue widespread or officially resolved?
The available evidence does not establish how many players are affected, whether there is an active widespread outage, or what causes the current report. A May 15, 2026 article uses the wording “Brawl Stars ‘Server Error 43’ message after Duels game troubles many,” but that wording is not a measured count, and its troubleshooting explanation is not corroborated by the official historical notes. MacMyths article dated May 15, 2026.
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One Google Play review dated August 30, 2025 reports Server Error 43 during 5v5 matches. A single review shows that one player reported the message in another mode; it does not demonstrate prevalence or a shared cause. Brawl Stars on Google Play.
What should you do if it happens after Duels?
These are cautious steps, not verified fixes for the reported Duels problem. Supercell’s historical examples were addressed through game maintenance or updates; they do not establish a player-side remedy for the present report.
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- Check for an update: Open the App Store or Google Play, find Brawl Stars, and install an available update.
- Retry later: If the error appears again, wait a while before trying another match. This may help if the problem is transient, but it is not a confirmed fix.
- Contact support if it continues: In Brawl Stars, open the in-game Settings and select Help and Support. Describe that the error followed a Duels match and include when it happened and what you were doing immediately beforehand.
The cited sources do not show that this report is caused by Wi-Fi, a device, DNS, or a VPN, or that changing network equipment or reinstalling the game will resolve it. Avoid treating those changes as established solutions.
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