Unreal Engine 5, Android game Failed to open descriptor file

Snipaz91 · June 15, 2022, 3:10am

I am having issues trying to deploy my game through google play and whenever I launch the game it crashes on the splash screen and says failed to load the descriptor file.
When I press okay the game crashes and if I try to reload the game it just keeps doing the same thing.
I configured my settings the way it was shown in (Packaging Android Projects in Unreal Engine | Unreal Engine 5.0 Documentation).

The only crash report I have shows: Native crash at signal 11 (SIGSEGV), in split_config.arm64_v8a.apk!libUnreal…

I am currently using:
Unreal Engine 5.0.2,
Android Studio 4.0
Visual Studio 2019
Pixel 2 on android 11 & Pixel 5 on android 12

With:
SDK: Target 30, Minimum 23
NDK: 21.4.7075529
JDK: 1.8.0_241
This is my log from when Packaging the Game for Android ATSC

gist.github.com

https://gist.github.com/Snipaz9/15ab4373c13a02c4b4a80a68febb7a5e

QuickLaunchPixel.txt

LogTurnkeySupport: Display: Adding device menu item for DESKTOP-E6BHLPB
LogTurnkeySupport: Running Turnkey device detection: ' -ScriptsForProject="D:/RaptureRunner/RaptureRunner/RaptureRunner.uproject" Turnkey -utf8output -WaitForUATMutex -command=VerifySdk -ReportFilename="D:/RaptureRunner/RaptureRunner/Intermediate/TurnkeyReport_2.log" -log="D:/RaptureRunner/RaptureRunner/Intermediate/TurnkeyLog_2.log" -project="D:/RaptureRunner/RaptureRunner/RaptureRunner.uproject"  -Device=Android_ASTC@HT7CB1A00524+Android_Multi@HT7CB1A00524'
LogMonitoredProcess: Running Serialized UAT: [ cmd.exe /c ""D:/Unreal Engine/UE_5.0/Engine/Build/BatchFiles/RunUAT.bat"  -ScriptsForProject="D:/RaptureRunner/RaptureRunner/RaptureRunner.uproject" Turnkey -utf8output -WaitForUATMutex -command=VerifySdk -ReportFilename="D:/RaptureRunner/RaptureRunner/Intermediate/TurnkeyReport_2.log" -log="D:/RaptureRunner/RaptureRunner/Intermediate/TurnkeyLog_2.log" -project="D:/RaptureRunner/RaptureRunner/RaptureRunner.uproject"  -Device=Android_ASTC@HT7CB1A00524+Android_Multi@HT7CB1A00524" -nocompile ]
LogTurnkeySupport: Completed device detection: Code = 0
LogMonitoredProcess: Running Serialized UAT: [ cmd.exe /c ""D:/Unreal Engine/UE_5.0/Engine/Build/BatchFiles/RunUAT.bat"  -ScriptsForProject="D:/RaptureRunner/RaptureRunner/RaptureRunner.uproject" Turnkey -command=VerifySdk -UpdateIfNeeded -platform=Android -noturnkeyvariables -device=HT7CB1A00524 -utf8output -WaitForUATMutex  -cookflavor=ASTC -EditorIO -EditorIOPort=57095  -project="D:/RaptureRunner/RaptureRunner/RaptureRunner.uproject"" -nocompile ]
UATHelper: Verifying SDK and Device (Android): Running AutomationTool...
UATHelper: Verifying SDK and Device (Android): Parsing command line: -ScriptsForProject=D:/RaptureRunner/RaptureRunner/RaptureRunner.uproject Turnkey -command=VerifySdk -UpdateIfNeeded -platform=Android -noturnkeyvariables -device=HT7CB1A00524 -utf8output -WaitForUATMutex -cookflavor=ASTC -EditorIO -EditorIOPort=57095 -project=D:/RaptureRunner/RaptureRunner/RaptureRunner.uproject -nocompile
UATHelper: Verifying SDK and Device (Android): Log location: C:\Users\devin\AppData\Roaming\Unreal Engine\AutomationTool\Logs\D+Unreal+Engine+UE_5.0\Log.txt
UATHelper: Verifying SDK and Device (Android): Platform(s) and/or device(s) needed for VerifySdk command. Check parameters or selections.
UATHelper: Verifying SDK and Device (Android): Cleaning Temp Paths...

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This is my log for when I Quick Launch onto my Pixel 2 (same result for Pixel 5)

gist.github.com

https://gist.github.com/Snipaz9/7fe1151708fae9074479ecae94293219

AndroidPackaging.txt

LogStall: Startup complete.
LogLoad: (Engine Initialization) Total time: 21.36 seconds
LogLoad: (Engine Initialization) Total Blueprint compile time: 0.00 seconds
LogAssetRegistry: Asset discovery search completed in 16.6631 seconds
LogCollectionManager: Fixed up redirectors for 0 collections in 0.000002 seconds (updated 0 objects)
LogNiagara: Compiling System NiagaraSystem /Game/LevelPrototyping/Effects/Ash_01.Ash_01 took 2.448438 sec, no shader worker used.
LogNiagara: Compiling System NiagaraSystem /Game/LevelPrototyping/Effects/Newspaper_01.Newspaper_01 took 2.322971 sec, no shader worker used.
LogContentStreaming: Texture pool size now 1000 MB
LogNiagara: Compiling System NiagaraSystem /Game/LevelPrototyping/Effects/RolingFog_01.RolingFog_01 took 2.389165 sec, no shader worker used.
LogTurnkeySupport: Display: Adding device menu item for DESKTOP-E6BHLPB

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This is the screen that loads, as soon as you click Ok the game crashes, relaunching results in the same image:

These are my packaging, android, and Android SDK settings.

I have tried using Android Studio 3.5.3, as well as Visual Studio Code 2021.

I have tried changing
SDK, Target (21-31) Minimum (9-23)
NDK, (21.1.6452462),(24.0.8215888)
JDK, (1.8.0_77),(1.8.0_112),(1.8.0_202),(18.0.1.1)
based on forum suggestions all with either the same results or without packaging at all.

Other Things I’ve tried:

https://www.reddit.com/r/unrealengine/comments/oa75b3/ue426_maybe_its_the_answer_of_failed_to_open/

https://mediacbl.com/unreal-engine/fail-open-descriptor-file-and-ue4-exe-debug-vs/

I would really appreciate any suggestions or fixes anyone can think of, this is my first time posting a question so hopefully I have provided enough information to help.

Thank you to everyone in advance!

Lit_Chan · June 22, 2022, 4:30pm

The same problem occurred on the linux platform, Does anyone has any idea to solve?

Lit_Chan · June 23, 2022, 11:05am

Check the Engine/Binaries directory, if not exist, try to create it manually.

This problem has been reproduced in Linux platform.

I found the root course is the engine will search the root path in below code block

Snipaz91 · June 24, 2022, 12:19am

Thanks for the suggestion, still not working though.
The Binaries already existed but I tried deleting and repackaging and it generated the file again but still with no change in my end result.
Back to the drawing board.

Lit_Chan · June 24, 2022, 1:51am

I not familar Android platform, but when I package project in Linux, the uproject file seems not be packaged in the pak file.

Can you try add a uproject file to your final package?

anonymous_user_f2fda774 · June 25, 2022, 6:47am

Just wanted to weigh in quickly… I was having the same problem (among many others) after upgrading an AR project from 4.27 to 5.0. I SEEM to have resolved them by some combination of the following things:

Downgraded NDK to v21.1.6352462 (r21b) from v21.4.7075529 (r21e)
Set package mode to ‘Development’ instead of ‘Shipping’
Unchecked ‘Package game data inside .apk?’
Explicitly set SDK & NDK paths
Set SDK API Level to ‘matchndk’
Added ‘android.permission.WRITE_EXTERNAL_STORAGE’ and ‘android.permission.READ_EXTERNAL_STORAGE’ extra permissions

As a disclaimer, I have yet to do a full release cycle with this and I’m still dreading getting everything to work on Mac for iOS…but I am again able to run my app on my test Samsung Galaxy S9+.

Hope this helps somebody!

Snipaz91 · June 29, 2022, 5:45pm

I’m not sure, I have little familiarity with Android and none with Linux, but the uProject seems to be in my package so I don’t know that that is would be my issue?

Snipaz91 · June 29, 2022, 5:47pm

I tried with the settings you provided and am still getting my error, my issue may be something else I’ve done, I’m not sure.

B2Dobbs · February 24, 2023, 3:53pm

I’m getting this issue on Linux as well but from Cross-Compiling on Windows then testing on a Linux machine. I’ve only done development builds so far. Would appreciate a solution!

ryanjon2040 · June 14, 2023, 7:14am

For me the fix in Unreal Engine 5.2 is to disable Android File Server from Project Settings.

And here is my Android Settings:

Jon_Olive · May 8, 2024, 5:42pm

thank you - disabling Android file Server worked for me in 5.4.1

KarunaKet · April 11, 2025, 1:18pm

Thanks dude!!

ManthanXD · April 27, 2025, 2:04pm

For anyone still facing the issue, try installing the AndroidFileServer Plugin.

It did resolve the error for me!