v41.00 Known Issues & Pre-Release Updates

General Issues and Bug Reporting
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Hello Fortnite developers,

Update: Follow a Developer on Exit Flow
In v40.40, we added the option for players to follow a developer in the Exit sidebar when leaving an island. With v41.10 (June 25), we will introduce the previously announced change (40.20 Fortnite Ecosystem Updates and Release Notes | Fortnite Documentation | Epic Developer Community) to remove the Follow a Developer button from the Developer Profile Link device—the device itself will still be usable and existing follower counts are not affected.

These updates give players a consistent way to follow their favorite developers across Fortnite and prevent differences in how developers use the device from influencing follower counts.

If you direct players to the device to follow your profile today, you’ll need to update those callouts before v41.10 on June 25.

Update: /UnrealEngine.com/SceneGraph Verse path no longer compiles
v41.00 fixes a bug where using { /UnrealEngine.com/SceneGraph } would incorrectly compile in Verse. Projects that reference this path will no longer compile and should use using { /Verse.org/SceneGraph } instead. This change ships with v41.00 (June 6).

Reminder: Illegal Property Override warnings become errors in v41.00
In v40.00, we fixed a bug that caused incomplete hidden property validation, meaning you may see Illegal property override warnings. These warnings will become errors in v41.00. Validation errors will prevent you from launching a session and from publishing.

v41.00 Known Issues:
Here are known issues that will be introduced with v41.00. We’ll update this thread as fixes roll out or timelines change.

Live Edit
We’re tracking several Live Edit issues in v41.00, all targeted for a fix in v41.10 (June 25):

  • Using Refresh Session while the game is paused can stop the Escape key from opening the menu, leaving you stuck in live view, or cause the session to time out and return an error.
    • Workaround: Force close and relaunch the client if stuck in live view.
  • If you close a Live Edit session while the game is paused, the Pause and Resume buttons will appear in each other’s positions in your next session.
  • Switching to another project while a Live Edit session is still active returns an error.
  • After you use the Scatter tool in UEFN, the Push Changes button doesn’t trigger.
    • Workaround: Hit the Refresh button to update the session.

UEFN entering idle mode can disconnect Spatial Profiler sessions

  • If UEFN goes idle (showing “Press any key to continue”), Spatial Profiling sessions can disconnect and stay unavailable until you restart UEFN.
  • Restarting UEFN will resolve the issue.
  • Fix targeted for v41.10 (June 25)

Memory Snapshot button is grayed out

  • The Memory Snapshot button stays grayed out until the Spatial Profiler has been opened at least once during a session
  • Workaround: Open the Spatial Profiler, then access Memory Snapshot
  • Fix targeted for v41.10 (June 25)

Some Shotguns only load 2 shots per reload

  • Several Shotguns only reload 2 shots at a time instead of filling the magazine. The reload animation may also not play.
  • Affected Shotguns: Auto Shotgun, Combat Shotgun, High Stakes’ Shotgun, Megalo Don’s Modular Combat Shotgun, Modular Combat Shotgun, Prime Shotgun, and Wood Stake Shotgun.
  • Fix targeted for v41.10 (June 25) at the latest

Sun bloom may be exaggerated on Switch

  • On Switch, some locations may render overly bright with a strong tint.
  • Fix targeted for v41.10 (June 25)

Items with a custom rarity color show the default glow when placed

  • Subclassed Fortnite items that use a custom rarity color display the default rarity glow when dropped or placed in the world; the inventory UI shows the correct custom color.
  • Fix targeted for v41.20 (July 16)

Health Bar from the Custom HUD device may not display correctly on PC

  • In published islands, the Health Bar from the Custom HUD device may not display correctly. All other platforms are unaffected.
  • Workaround: Use the default health bar instead of the Custom HUD device.
  • Fix targeted for v41.10 (June 25)

v41.00 Top Community Fixes
The following fixes are from issues that you submitted to us on the forums. Thank you for reporting these issues.

  • Fixed an issue where adding and removing entities in the world would cause server degradation.
  • Fixed an issue where some Physics Materials were unexposed.
  • Fixed an issue where launching a session on some projects would fail with a cook error.
  • Fixed an issue where Fortnite would not close properly after launching a session through UEFN.
  • Fixed an issue where the client would crash after ten minutes of spawning and despawning entities.
  • Fixed an issue where selecting two duplicated actors would cause a crash in UMG.

For a full list of all scheduled fixes for v41.00, refer to this search on the Epic Developer Community forums: Search results for ''Closed' as 'Fixed'. The issue will be addressed in 41.00. order:latest' - Epic Developer Community Forums

Issue with players joining the same session
Unable to publish my map due to verse validation at UEFN Creator Portal
Scheduled Releases update on trello
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Live Edit:

  • List item You may experience issues launching a session if you’ve switched between different Epic accounts while editing the same project on the same Windows user and machine. If you do, please clear the following directory and try again.

%LOCALAPPDATA%/UnrealEditorFortnite/Intermediate/ValkyrieUploadTemp

1 Like
I cannot launch session
"Failed to connect to beacon" upon launching session
Players can't join my map in public, Matchmaking error (errors.com.epicgames.common.processing)
Unable To Play: Failed to upload source files
Published Game can't launch server, Editor can't launch session
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We’re tracking the following additional issues introduced with v41.00. We’ll update this thread as fixes roll out or timelines change.

Verse device visibility logic may be unintentionally interfered with by prop manipulators

  • Players may notice a Verse device intended to be invisible appearing in-game.
  • Workaround: None known.
  • Fix targeted for v41.10 (June 25)

“MMS Backfill” and “Social Joining” cannot be disabled via Island Settings or Round Settings Device

  • Players joining a session in progress via MMS Backfill or Social Joining cannot be restricted in Island Settings or the Round Settings device, allowing unintended joins regardless of the configured settings.
  • Workaround: None known.
  • Fix targeted for v41.10 (June 25)

Player characters on physics-enabled islands can perform unsupported movement modes

  • On islands where ‘Enable Physics’ is set to ‘Enabled’ in Island Settings, player characters can perform unsupported movement modes: Hurdle, Wall Scramble, Wall Kick, Boosted Jump, and Roll Landing.
  • Workaround: In Island Settings, set ‘Enable Physics’ to ‘Disabled’, then set ‘Locomotion Preset’ to ‘Custom’ and disable the unsupported movement modes listed above. Re-enable ‘Enable Physics’ when done.
  • Fix targeted for v41.10 (June 25)
Matchmaking "Same Team" no longer functioning.
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Fall Damage may not work as intended

  • Fall Damage sometimes stops working after the first game in edit mode, and may not work at all in published maps. We’ll let you know when we have an update or a fix.
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Heading Now Typeface “67 Extra Bold” unavailable

  • The Typeface “67 Extra Bold” in HeadingNow is no longer selectable/displayed, which could cause UI issues in some games.
  • We are investigating and will let you know as soon as we have more information.
Heading Now Typeface "67 Extra Bold" no longer available
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Players may experience crashes while playing some UEFN islands

  • We are aware that some islands are causing the client to crash and we are working on a fix.
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We’re continuing to work on a fix for the crashes that are occurring in UEFN islands. In the meantime, playing the game in Private rather than Public may lower the frequency of crashes.

We’ll let you know when this is resolved.

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Crash issue with Follow a Developer

  • To prevent an issue that caused players to crash, we’ve temporarily disabled the ‘follow’ ability of the Developer Profile device in UEFN and Creative.
  • We’re working on a fix now, and please keep in mind this feature will be disabled in v41.10
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This is now fixed. Fall damage is now working as expected.

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Player remains in spectator mode after elimination.

  • When a player is eliminated and selects the ‘Spectate’ option they remain on ‘Spectator Mode’ for the entire match even after re-joining or re-launching. After another round begins, the player still remains on ‘Spectator Mode’.
  • We are working on a fix.
3 Likes
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Heading Now Typeface “67 Extra Bold” is now available.

  • Please be aware that “85 Medium” will be removed in our next update.
  • Please do not use this font, as it will cause UI issues with your islands.
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UI Interface Feature Example - Validation error

  • Users who create a new User Interfaces Feature Example project will receive a validation error when trying to run it.
  • As a temporary fix, please run the validation fix-up to allow the project to run. We are working on a permanent solution.
  • Note: This won’t affect users who have existing projects from the feature example that were created before 41.00.