[Bug] DllNotFoundException: Unable to load DLL 'FirebaseCppApp-11_4_0'

[johntitor08]

[REQUIRED] Please fill in the following fields:

• Unity editor version: _____
• Firebase Unity SDK version: _____
• Source you installed the SDK: _____ (.unitypackage or Unity Package Manager)
• Problematic Firebase Component: _____ (Auth, Database, etc.)
• Other Firebase Components in use: _____ (Auth, Database, etc.)
• Additional SDKs you are using: _____ (Facebook, AdMob, etc.)
• Platform you are using the Unity editor on: _____ (Mac, Windows, or Linux)
• Platform you are targeting: _____ (iOS, Android, and/or desktop)
• Scripting Runtime: _____ (Mono, and/or IL2CPP)
• Pre-built SDK from the website or open-source from this repo: _____

[REQUIRED] Please describe the issue here:

(Please list the full steps to reproduce the issue. Include device logs, Unity logs, and stack traces if available.)

Steps to reproduce:

Have you been able to reproduce this issue with just the Firebase Unity quickstarts (this GitHub project)?
What's the issue repro rate? (eg 100%, 1/5 etc)

What happened? How can we make the problem occur?
This could be a description, log/console output, etc.

If you have a downloadable sample project that reproduces the bug you're reporting, you will
likely receive a faster response on your issue.

Relevant Code:

// TODO(you): code here to reproduce the problem

Error:
DllNotFoundException: Unable to load DLL 'FirebaseCppApp-11_4_0'. Tried the load the following dynamic libraries: Rethrow as TypeInitializationException: The type initializer for 'Firebase.AppUtilPINVOKE.SWIGExceptionHelper' threw an exception. Rethrow as TypeInitializationException: The type initializer for 'Firebase.AppUtilPINVOKE' threw an exception. Rethrow as TypeInitializationException: The type initializer for 'Firebase.LogUtil' threw an exception. Rethrow as TypeInitializationException: The type initializer for 'Firebase.FirebaseApp' threw an exception.

[a-maurice]

This is a common issue with project configuration. What platform are you running on that is getting this error? Are all the Firebase SDKs that you are using the version at 11.4.0?

[Antonio-Gorisek]

@johntitor08
I had this error for ANDROID and I fix it (I haven't tested it for iOS jet) DllNotFoundException: FirebaseCppApp-11_2_0 assembly:
It was actually very simple for me.

1. The Firebase and ExternalDependencyManager folders must be located in the Asset folder; you should not move them elsewhere.

2. Delete the Firebase and ExternalDependencyManager folders and then install each Firebase SDK asset you need.

3. Run Force resolve.
   

[kosars]

Have same error even on firebase database test project (https://github.com/firebase/quickstart-unity/tree/master/database/testapp)

@Antonio-Gorisek not worked for me

Unity editor version: 2022.3.8f1
Firebase Unity SDK version: 11.4.0
Source you installed the SDK: FirebaseDatabase.unitypackage
Problematic Firebase Component: Database
Other Firebase Components in use: none
Additional SDKs you are using: none
Platform you are using the Unity editor on: Windows
Platform you are targeting: Android
Scripting Runtime: tried both Mono and IL2CPP

Error:
DllNotFoundException: FirebaseCppApp-11_4_0 assembly: type: member:(null)
Firebase.AppUtilPINVOKE+SWIGExceptionHelper..cctor () (at /Users/runner/work/firebase-unity-sdk/firebase-unity-sdk/macos_unity/x86_64/app/swig/Firebase.App_fixed.cs:4087)
Rethrow as TypeInitializationException: The type initializer for 'SWIGExceptionHelper' threw an exception.
Firebase.AppUtilPINVOKE..cctor () (at /Users/runner/work/firebase-unity-sdk/firebase-unity-sdk/macos_unity/x86_64/app/swig/Firebase.App_fixed.cs:4107)
Rethrow as TypeInitializationException: The type initializer for 'Firebase.AppUtilPINVOKE' threw an exception.
Firebase.AppUtil.SetLogFunction (Firebase.LogUtil+LogMessageDelegate arg0) (at /Users/runner/work/firebase-unity-sdk/firebase-unity-sdk/macos_unity/x86_64/app/swig/Firebase.App_fixed.cs:4817)
Firebase.LogUtil..ctor () (at /Users/runner/work/firebase-unity-sdk/firebase-unity-sdk/app/src/LogUtil.cs:81)
Firebase.LogUtil..cctor () (at /Users/runner/work/firebase-unity-sdk/firebase-unity-sdk/app/src/LogUtil.cs:37)
Rethrow as TypeInitializationException: The type initializer for 'Firebase.LogUtil' threw an exception.
Firebase.FirebaseApp..cctor () (at /Users/runner/work/firebase-unity-sdk/firebase-unity-sdk/macos_unity/x86_64/app/swig/Firebase.App_fixed.cs:2014)
Rethrow as TypeInitializationException: The type initializer for 'Firebase.FirebaseApp' threw an exception.
Firebase.Sample.Database.UIHandler.Start () (at Assets/Firebase/Sample/Database/UIHandler.cs:53)

[google-oss-bot]

Hey @johntitor08. We need more information to resolve this issue but there hasn't been an update in 5 weekdays. I'm marking the issue as stale and if there are no new updates in the next 5 days I will close it automatically.

If you have more information that will help us get to the bottom of this, just add a comment!