DllNotFoundException: Unable to load DLL 'FirebaseCppApp-5.5.0': The specified module could not be found.

[G-r-i-n-c-h]

Please fill in the following fields:

Unity editor version: Unity 2018.3.7f
Firebase Unity SDK version: 5.5.0
Additional SDKs you are using (Facebook, AdMob, etc.):
Platform you are using the Unity editor on (Mac, Windows, or Linux): OSX
Platform you are targeting (iOS, Android, and/or desktop): Android

Please describe the issue here:

imported new project with 5.5 version of Firebase getting this error if i have iL2Cpp + all target architectures checked. scripting backend is .Net 4.x Api Compatibility level .Net 4.x

[alexames]

We've seen this problem in the past when developers delete files that the Firebase plugin requires. Is is possible some files got delete by mistake? Does the problem persist if you do a clean install of the plugin?Can you reproduce this error on a clean copy of the Unity quickstart testapp?

[hl4hck]

@alexames I have the same problem.
I found this issue when I selected ARM64 in Target Architectures for 64-bit support.

Could you provide any update or workaround?

===== exception log =====
03-09 18:29:41.172 26489 26516 E Unity : DllNotFoundException: Unable to load DLL 'FirebaseCppApp-5.5.0': The specified module could not be found.
03-09 18:29:41.172 26489 26516 E Unity : at Firebase.AppUtilPINVOKE.PollCallbacks () [0x00000] in :0
03-09 18:29:41.172 26489 26516 E Unity : at Firebase.AppUtil.PollCallbacks () [0x00000] in :0
03-09 18:29:41.172 26489 26516 E Unity : at Firebase.Platform.FirebaseHandler.Update () [0x00000] in :0

[Rolos]

Was having this issue and followed @alexames suggestion of reinstalling the firebase plugin. After that i had to regenerate the facebook manifest and it worked as expected.

[hl4hck]

@Rolos I changed the Unity version from Unity 2017 to Unity 2018.2.21f, and it works well. Thank you. :)

[G-r-i-n-c-h]

hey guys so i did not deleted anything after researching and changing lots of things found out that each time you change back-end from 3.5 to 4.x or even api level you need to make force resolve of dependencies idk why but after forcing it twice it works just great. now my app runs on all architects with iL2CPP + 2018.3.7 + Net 4.x. thanks for info maybe this will help others too :)

[ctykaya]

Unity Editor Version: 2018.3.8f1
Firebase 5.5.0
Admob 3.15
Google Play Service 0.9.62
OS: macOS High Sierra 10.13.6
Target Platform: Android

hello guys I have struggling the same issues and searching a solution for a week already. Firebase threw an exception DllNotFound. My setup firebase sdk 5.5.0 adman 3.15. and google play services treid man thing but nothing helps. Could any one help?

[G-r-i-n-c-h]

https://i.imgur.com/JWuxnhQ.jpg
this is my settings i am using latest google play,admob,facebook and all kind of other sdk + Resolver is v1.2.102.0. just double check everything. delete firabase,delete all imported .aar files from resolver and use force resolve from play services :) to ensure do it 2-3 times. that helped me :)

[ctykaya]

@WTF-Grinch :) I delete all files and reimported it my resolver is also v1.2.102.0 but the problem is still there! I did it 4 times :D

[G-r-i-n-c-h]

@ctykaya are the settings the same as image i show ? lets open x86_64 folder and see if all files have this settings :) https://imgur.com/kWLXRhb

[ctykaya]

I cannot open your image file browser give and error say one file found
https://ibb.co/FX58yD1 my x86_64 have these files
All files checked Editor and standalone
I reset unity and the problem SOLVED 👍

[G-r-i-n-c-h]

you just need to copy/paste image link but anyway good to here that its working :)

[johnsergeyev]

@ctykaya what did you actually reset in unity to make it work? have the same issue

[ctykaya]

@johnsergeyev I quit it and restart the unity again. When you change plugin by script or resolve should restart unity.

[johnsergeyev]

@ctykaya doesn't work in my case, i've force resolved twice, restarted unity -> still having same error =/