# \#troubleshooting **URL:** https://forums.unrealengine.com/tag/troubleshooting/11297.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Fixed: Unreal Engine 5.4.4 install failed around 70%, IS-IN-FC02, Xcode not detected, then crash on MacBook Air M1 / macOS Sequoia](https://forums.unrealengine.com/t/fixed-unreal-engine-5-4-4-install-failed-around-70-is-in-fc02-xcode-not-detected-then-crash-on-macbook-air-m1-macos-sequoia/2729988)
**Author:** [@Hashiba](https://forums.unrealengine.com/u/Hashiba)\ **Replies:** 0\ **Last updated:** [June 19, 2026, 7:39pm UTC](https://forums.unrealengine.com/t/fixed-unreal-engine-5-4-4-install-failed-around-70-is-in-fc02-xcode-not-detected-then-crash-on-macbook-air-m1-macos-sequoia/2729988 "2026-06-19T19:39:29Z")
Fixed: Unreal Engine 5.4.4 install failed around 70%, Xcode not detected, then crash on MacBook Air M1 / macOS Sequoia I was finally able to install and launch Unreal Engine 5.4.4 on my MacBook Air M1 running macOS Sequo… --- ## [NEED HELP WITH ASSET RECOVERY!!! (4.27)](https://forums.unrealengine.com/t/need-help-with-asset-recovery-4-27/2729181)
**Author:** [@MKthot](https://forums.unrealengine.com/u/MKthot)\ **Replies:** 2\ **Last updated:** [June 17, 2026, 6:58am UTC](https://forums.unrealengine.com/t/need-help-with-asset-recovery-4-27/2729181 "2026-06-17T06:58:41Z")
Using Unreal Engine 4.27 and I don’t know what the hell happened, I had fixed an issue with one of my assets and was deleting the now unused event handlers from the parent class when Unreal Engine decided to delete the e… --- ## [LogAutomationTest: Error: Condition failed](https://forums.unrealengine.com/t/logautomationtest-error-condition-failed/2544078)
**Author:** [@FutureCake](https://forums.unrealengine.com/u/FutureCake)\ **Replies:** 11\ **Last updated:** [January 23, 2026, 9:41am UTC](https://forums.unrealengine.com/t/logautomationtest-error-condition-failed/2544078 "2026-01-23T09:41:53Z")
Hello there, I have upgraded my blueprint only project from UE 5.4 and UE 5.5 to UE 5.6 (I’ve tried upgrading from both, UE5.4 and UE5.5). However, on startup it shows the following error: LogAutomationTest: Error: C… --- ## [Periphrials disconnecting when ue5 is open](https://forums.unrealengine.com/t/periphrials-disconnecting-when-ue5-is-open/593913)
**Author:** [@ThreeTreeDog](https://forums.unrealengine.com/u/ThreeTreeDog)\ **Replies:** 11\ **Last updated:** [October 19, 2025, 1:16pm UTC](https://forums.unrealengine.com/t/periphrials-disconnecting-when-ue5-is-open/593913 "2025-10-19T13:16:06Z")
I have a weird issue where when UE is open my periphials connect and disconnect, I have a X570 mobo that has not had the firmware upgraded. I had issue with the same in other apps until I seperated the keyboard mouse to … --- ## [Why doesn't the Scene Capture 2D camera in UE5 display the Render-Target texture like it did in UE4?](https://forums.unrealengine.com/t/why-doesnt-the-scene-capture-2d-camera-in-ue5-display-the-render-target-texture-like-it-did-in-ue4/530139)
**Author:** [@eydeet](https://forums.unrealengine.com/u/eydeet)\ **Replies:** 11\ **Last updated:** [October 13, 2025, 5:45am UTC](https://forums.unrealengine.com/t/why-doesnt-the-scene-capture-2d-camera-in-ue5-display-the-render-target-texture-like-it-did-in-ue4/530139 "2025-10-13T05:45:52Z")
I want to set up a screen that displays the image from a “Scene Capture 2D” camera like I did in this UE4 sketch: However, when I do the same in UE5, the camera works, but it doesn’t see itself and just renders a bla… --- ## [Client was kicked by Easy Anti-Cheat due to “corrupt or invalid backend message”](https://forums.unrealengine.com/t/client-was-kicked-by-easy-anti-cheat-due-to-corrupt-or-invalid-backend-message/2549206)
**Author:** [@sing129](https://forums.unrealengine.com/u/sing129)\ **Replies:** 1\ **Last updated:** [June 10, 2025, 8:24am UTC](https://forums.unrealengine.com/t/client-was-kicked-by-easy-anti-cheat-due-to-corrupt-or-invalid-backend-message/2549206 "2025-06-10T08:24:19Z")
I am writing to request assistance regarding an issue where a client was automatically removed from the server by the anti-cheat system. The logs indicate the following message: “ActionReason: 2 - Details: Corrupt or i… --- ## [Client kicked by EAC: Corrupt or invalid backend message ](https://forums.unrealengine.com/t/client-kicked-by-eac-corrupt-or-invalid-backend-message/2549176)
**Author:** [@sing129](https://forums.unrealengine.com/u/sing129)\ **Replies:** 0\ **Last updated:** [June 10, 2025, 3:03am UTC](https://forums.unrealengine.com/t/client-kicked-by-eac-corrupt-or-invalid-backend-message/2549176 "2025-06-10T03:03:14Z")
I am writing to request assistance regarding an issue where a client was automatically removed from the server by the anti-cheat system. The logs indicate the following message: “ActionReason: 2 - Details: Corrupt or i… --- ## [\[UE5\] Niagara Liquid Not Working at Small Scales](https://forums.unrealengine.com/t/ue5-niagara-liquid-not-working-at-small-scales/655082)
**Author:** [@MattDeakin](https://forums.unrealengine.com/u/MattDeakin)\ **Replies:** 1\ **Last updated:** [June 2, 2025, 3:43pm UTC](https://forums.unrealengine.com/t/ue5-niagara-liquid-not-working-at-small-scales/655082 "2025-06-02T15:43:36Z")
Hey! I’ve been having some trouble trying to get Niagara to work at smaller scales. I’m trying to use it to fill up a glass with liquid however, the emitter just doesn’t seem to be adding at all to the domain. All I did… --- ## [Unreal 5.1.0 Preview crashes on startup](https://forums.unrealengine.com/t/unreal-5-1-0-preview-crashes-on-startup/672900)
**Author:** [@JPMcWhiskers](https://forums.unrealengine.com/u/JPMcWhiskers)\ **Replies:** 21\ **Last updated:** [April 24, 2025, 8:42pm UTC](https://forums.unrealengine.com/t/unreal-5-1-0-preview-crashes-on-startup/672900 "2025-04-24T20:42:42Z")
When I try to start the new Unreal 5.1.0 Preview 2 (This happened to me on Preview 1 as well) I get this error: Unhandled Exception: EXCEPTION\_ACCESS\_VIOLATION reading address 0x0000000000000000 UnrealEditor\_UdpMessagi… --- ## [Issue with sockets ](https://forums.unrealengine.com/t/issue-with-sockets/2464570)
**Author:** [@No4XtraMayo](https://forums.unrealengine.com/u/No4XtraMayo)\ **Replies:** 0\ **Last updated:** [April 19, 2025, 1:15pm UTC](https://forums.unrealengine.com/t/issue-with-sockets/2464570 "2025-04-19T13:15:33Z")
I need help and i dont know where else to go i have been making a souls like game on unreal engine 5.5 and for some reason i can not get the items to come to the hand sockets i made i made hand sockets and they work good… --- ## [How to set up a metadata server for Unreal Game Sync #UE5-0](https://forums.unrealengine.com/t/how-to-set-up-a-metadata-server-for-unreal-game-sync-ue5-0/509507)
**Author:** [@SDL59](https://forums.unrealengine.com/u/SDL59)\ **Replies:** 3\ **Last updated:** [April 3, 2025, 2:10pm UTC](https://forums.unrealengine.com/t/how-to-set-up-a-metadata-server-for-unreal-game-sync-ue5-0/509507 "2025-04-03T14:10:35Z")
We’re using UGS and I have set up a metadata server with mySQL and IIS. The metadata server appears to be up and running. I can hit, ‘http://localhost:/api/latest’ in a browser and it appears to give me the correct respo… --- ## [\[Quick Tip\] How to Stop Vanishing Material : Material Vanishes When a Prop is Damaged](https://forums.unrealengine.com/t/quick-tip-how-to-stop-vanishing-material-material-vanishes-when-a-prop-is-damaged/1211830)
**Author:** [@DRAGONSTUDIO](https://forums.unrealengine.com/u/DRAGONSTUDIO)\ **Replies:** 13\ **Last updated:** [October 4, 2024, 12:00am UTC](https://forums.unrealengine.com/t/quick-tip-how-to-stop-vanishing-material-material-vanishes-when-a-prop-is-damaged/1211830 "2024-10-04T00:00:21Z")
How to Stop Vanishing Material : Material Vanishes When a Prop is Damaged If your material in Unreal Editor for Fortnite (UEFN) is disappearing when your prop is hit with a pickaxe, or after being struck through a build,… --- ## [A new FAQ documentation based on the most frequent issues in Performance optimization](https://forums.unrealengine.com/t/a-new-faq-documentation-based-on-the-most-frequent-issues-in-performance-optimization/1809935)
**Author:** [@imagineer](https://forums.unrealengine.com/u/imagineer)\ **Replies:** 2\ **Last updated:** [August 24, 2024, 11:05pm UTC](https://forums.unrealengine.com/t/a-new-faq-documentation-based-on-the-most-frequent-issues-in-performance-optimization/1809935 "2024-08-24T23:05:09Z")
Hello, Can we have a new kind of documentation, a FAQ based on the most frequent and common issues or mistakes in performance optimization. A good example for beginners is the case when their sounds are getting interr… --- ## [Why Does Identical Blueprint Code Behave Differently in Two Identical Unreal Engine Projects?](https://forums.unrealengine.com/t/why-does-identical-blueprint-code-behave-differently-in-two-identical-unreal-engine-projects/1914512)
**Author:** [@BaZPT](https://forums.unrealengine.com/u/BaZPT)\ **Replies:** 12\ **Last updated:** [June 25, 2024, 3:54pm UTC](https://forums.unrealengine.com/t/why-does-identical-blueprint-code-behave-differently-in-two-identical-unreal-engine-projects/1914512 "2024-06-25T15:54:01Z")
Imagine creating two identical Unreal Engine projects and writing the same simple blueprint code in both. Sometimes the code works in one project but not in the other. I have reinstalled Unreal Engine, and I am using alm… --- ## [Unreal Engine 5 crashes when adding objects](https://forums.unrealengine.com/t/unreal-engine-5-crashes-when-adding-objects/519402)
**Author:** [@serubi](https://forums.unrealengine.com/u/serubi)\ **Replies:** 4\ **Last updated:** [March 31, 2024, 2:22pm UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-when-adding-objects/519402 "2024-03-31T14:22:11Z")
Hi, I have a fresh install of Unreal Engine 5 on Windows 10. Whenever I create/load a project, and then try to add any object to my level, the engine immediately crashes with the following error message: Assertion fai… --- ## [\[UE5\] why hlod outliner is greyed out?](https://forums.unrealengine.com/t/ue5-why-hlod-outliner-is-greyed-out/523139)
**Author:** [@judink1231](https://forums.unrealengine.com/u/judink1231)\ **Replies:** 14\ **Last updated:** [March 28, 2024, 6:36pm UTC](https://forums.unrealengine.com/t/ue5-why-hlod-outliner-is-greyed-out/523139 "2024-03-28T18:36:26Z")
i cannot click #UE5-0 --- ## [How to make it so you can build on a secondary landscape?](https://forums.unrealengine.com/t/how-to-make-it-so-you-can-build-on-a-secondary-landscape/1706989)
**Author:** [@JGameMaker92](https://forums.unrealengine.com/u/JGameMaker92)\ **Replies:** 0\ **Last updated:** [February 23, 2024, 1:57am UTC](https://forums.unrealengine.com/t/how-to-make-it-so-you-can-build-on-a-secondary-landscape/1706989 "2024-02-23T01:57:44Z")
I created another landscape farther off the map that I can teleport to but for some reason I cannot build on it. I’ve tried deleting it and rebuilding it several times, i’ve looked through all the settings but I still… --- ## [Unreal Engine 5.3.2 Crashes When Using Modeling Mode](https://forums.unrealengine.com/t/unreal-engine-5-3-2-crashes-when-using-modeling-mode/1619299)
**Author:** [@cloudyincs](https://forums.unrealengine.com/u/cloudyincs)\ **Replies:** 0\ **Last updated:** [January 16, 2024, 4:05pm UTC](https://forums.unrealengine.com/t/unreal-engine-5-3-2-crashes-when-using-modeling-mode/1619299 "2024-01-16T16:05:15Z")
Unreal Engine crashes when i use modeling mode… sometimes just from a switch to modeling mode and back to selection mode and sometimes when im just using polygroup edit and this also happens really ofter too + recent pol… --- ## [line 724 BulkData compressed header read error](https://forums.unrealengine.com/t/line-724-bulkdata-compressed-header-read-error/563807)
**Author:** [@Galbis](https://forums.unrealengine.com/u/Galbis)\ **Replies:** 6\ **Last updated:** [January 3, 2024, 2:06pm UTC](https://forums.unrealengine.com/t/line-724-bulkdata-compressed-header-read-error/563807 "2024-01-03T14:06:29Z")
The lights of my building went off , and now my project is corrupted. I lost 4 days of work. ( even if UE4 does autosaves every 10 minutes, my last autosave is from 4 days ago). i get that error when i try to open my pro… --- ## [Assertion failed: MacAddress.Num() == 6](https://forums.unrealengine.com/t/assertion-failed-macaddress-num-6/511376)
**Author:** [@asorgejr](https://forums.unrealengine.com/u/asorgejr)\ **Replies:** 6\ **Last updated:** [November 26, 2023, 12:03am UTC](https://forums.unrealengine.com/t/assertion-failed-macaddress-num-6/511376 "2023-11-26T00:03:09Z")
I’m running UE 5.0.0 (Preview 2) on Windows 10. The editor crashes when trying to open my World Partition level. The issue happens after I close Unreal and try to reopen. It will continue to crash with the same error un… --- ## [U4.27.2 Crashing on Launch - Assertion failed: “Missing required implementation."](https://forums.unrealengine.com/t/u4-27-2-crashing-on-launch-assertion-failed-missing-required-implementation/627806)
**Author:** [@buttfukka](https://forums.unrealengine.com/u/buttfukka)\ **Replies:** 1\ **Last updated:** [November 17, 2023, 7:47pm UTC](https://forums.unrealengine.com/t/u4-27-2-crashing-on-launch-assertion-failed-missing-required-implementation/627806 "2023-11-17T19:47:19Z")
Hey there, I’m recently struggling opening a project of mine I left about a week ago. It’s just loading and crashing to a message of: “Assertion failed: 0 && “Missing required implementation.” \[File:D:\\Build++UE4\\Sync\\E… --- ## [Build/Packing failed instantly while packaging my game](https://forums.unrealengine.com/t/build-packing-failed-instantly-while-packaging-my-game/1228621)
**Author:** [@R1N](https://forums.unrealengine.com/u/R1N)\ **Replies:** 0\ **Last updated:** [July 14, 2023, 2:30am UTC](https://forums.unrealengine.com/t/build-packing-failed-instantly-while-packaging-my-game/1228621 "2023-07-14T02:30:16Z")
Hello, I’m having problems with packaging my ue5 game where after I started packaging my project, an error pops up saying packing failed. heres my output log LogUObjectHash: Compacting FUObjectHashTables data took 0… --- ## [Compile errors on win 11 MSBUILD etc.. UE 4.27.2](https://forums.unrealengine.com/t/compile-errors-on-win-11-msbuild-etc-ue-4-27-2/511941)
**Author:** [@DeathCode\_studio](https://forums.unrealengine.com/u/DeathCode_studio)\ **Replies:** 6\ **Last updated:** [June 8, 2023, 12:04pm UTC](https://forums.unrealengine.com/t/compile-errors-on-win-11-msbuild-etc-ue-4-27-2/511941 "2023-06-08T12:04:43Z")
Hi we change our systems on win 11 pro and then start… we get msb3073 and exite with code 6. We download actual relase 4.27.2 from github we cant work now on our project. I try everything what i find from last 2 days, … --- ## [Demon slayer game crashes with unreal engine message Unhandled Exception: EXCEPTION\_ACCESS\_VIOLATION reading address 0x2b0205e0](https://forums.unrealengine.com/t/demon-slayer-game-crashes-with-unreal-engine-message-unhandled-exception-exception-access-violation-reading-address-0x2b0205e0/1158559)
**Author:** [@Warsonymat](https://forums.unrealengine.com/u/Warsonymat)\ **Replies:** 0\ **Last updated:** [May 8, 2023, 7:21am UTC](https://forums.unrealengine.com/t/demon-slayer-game-crashes-with-unreal-engine-message-unhandled-exception-exception-access-violation-reading-address-0x2b0205e0/1158559 "2023-05-08T07:21:22Z")
Whenever i play the game i would randomly get this crash: Unhandled Exception: EXCEPTION\_ACCESS\_VIOLATION reading address 0x2b0205e0 APK\_Win64\_Shipping APK\_Win64\_Shipping APK\_Win64\_Shipping APK\_Win64\_Shipping APK\_W… --- ## [Unreal Engine Crashing ,error: 0xffffffffffffffff](https://forums.unrealengine.com/t/unreal-engine-crashing-error-0xffffffffffffffff/721893)
**Author:** [@Divyanshu](https://forums.unrealengine.com/u/Divyanshu)\ **Replies:** 23\ **Last updated:** [December 11, 2022, 5:35pm UTC](https://forums.unrealengine.com/t/unreal-engine-crashing-error-0xffffffffffffffff/721893 "2022-12-11T17:35:13Z")
Hey, I was running my game when my game crashed, this is the error- LoginId:a8fe8e6941b8bdcdd0a4aeb3e6d85804 EpicAccountId:d09d84c33d8c4c7aa27d92101623ada9 Unhandled Exception: EXCEPTION\_ACCESS\_VIOLATION reading addre… --- ## [Pixel Streaming Instance Crashes When Connecting From Mobile Device](https://forums.unrealengine.com/t/pixel-streaming-instance-crashes-when-connecting-from-mobile-device/625715)
**Author:** [@chocobowings](https://forums.unrealengine.com/u/chocobowings)\ **Replies:** 4\ **Last updated:** [November 27, 2022, 5:48am UTC](https://forums.unrealengine.com/t/pixel-streaming-instance-crashes-when-connecting-from-mobile-device/625715 "2022-11-27T05:48:21Z")
Hi, I’m trying to get Pixel Streaming working with Unreal Engine 5 on an AWS instance; I’ve mainly been using the tutorial videos found here. I was able to get an instance working locally and on an AWS EC2 instance, but … --- ## [UE5 crashing when autosaving out of date packages](https://forums.unrealengine.com/t/ue5-crashing-when-autosaving-out-of-date-packages/667681)
**Author:** [@Aquay16](https://forums.unrealengine.com/u/Aquay16)\ **Replies:** 1\ **Last updated:** [November 8, 2022, 2:08am UTC](https://forums.unrealengine.com/t/ue5-crashing-when-autosaving-out-of-date-packages/667681 "2022-11-08T02:08:36Z")
I’m using Unreal Engine 5.1.0, and every time it autosaves out of date packages, the editor crashes. This also happens in brand new projects, and I can’t fix it no matter what I try. Here’s my error log: Fatal error: \[F… --- ## [Editor UI Glitching in dx12 and Vulkan (AMD GPU)](https://forums.unrealengine.com/t/editor-ui-glitching-in-dx12-and-vulkan-amd-gpu/607466)
**Author:** [@nKe.1](https://forums.unrealengine.com/u/nKe.1)\ **Replies:** 1\ **Last updated:** [November 5, 2022, 4:05am UTC](https://forums.unrealengine.com/t/editor-ui-glitching-in-dx12-and-vulkan-amd-gpu/607466 "2022-11-05T04:05:35Z")
Hey! I’ve been running into a issue where UE5 editor UI starts to flicker and glitch out when dx12 or Vulkan is selected as RHI. Video: UE5 Flickering UI - YouTube I’ve tried: -Changing rendering settings -Changing … --- ## [Freeze / Crash when interacting with UI / Drop-down](https://forums.unrealengine.com/t/freeze-crash-when-interacting-with-ui-drop-down/675775)
**Author:** [@Inerska](https://forums.unrealengine.com/u/Inerska)\ **Replies:** 0\ **Last updated:** [October 24, 2022, 7:00am UTC](https://forums.unrealengine.com/t/freeze-crash-when-interacting-with-ui-drop-down/675775 "2022-10-24T07:00:06Z")
Hey I’m an Unreal Engine project developer and I’m encountering some issue while I wanted to work with a basic FPS-template in Unreal Engine 5.0.3. Indeed, whenever I want to interact with the UI like right-clicking on … --- ## [Question/Bug? Tile Map all blocky on level load](https://forums.unrealengine.com/t/question-bug-tile-map-all-blocky-on-level-load/671608)
**Author:** [@CapAmerica](https://forums.unrealengine.com/u/CapAmerica)\ **Replies:** 0\ **Last updated:** [October 18, 2022, 2:25am UTC](https://forums.unrealengine.com/t/question-bug-tile-map-all-blocky-on-level-load/671608 "2022-10-18T02:25:07Z")
I’m having a weird issue, when I load into a level the whole tile map shows up all blocky for a sec before going back to normal, it doesn’t affect the sprites or UI elements, just the tile map. Anyone else have a simila… [Next page](https://forums.unrealengine.com/tag/troubleshooting/11297.md?match_all_tags=true&page=1&tags%5B%5D=troubleshooting)