# Bitrise not enabling multi dex **URL:** \ **Category:** Question & Answer\ **Created:** [July 17, 2017, 5:26pm UTC](https://discuss.bitrise.io/t/bitrise-not-enabling-multi-dex/2289 "2017-07-17T17:26:13Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![clee46](https://avatars.discourse-cdn.com/v4/letter/c/c89c15/32.png) [@clee46](https://discuss.bitrise.io/u/clee46)\ **Post date:** [July 17, 2017, 5:26pm UTC](https://discuss.bitrise.io/t/bitrise-not-enabling-multi-dex/2289/1 "2017-07-17T17:26:13Z")
I have a single repository using Xamarin to build both iOS and Android apps. My builds recently started failing with the following error message: /Library/Frameworks/Mono.framework/External/xbuild/Xamarin/Android/Xamarin.Android.Common.targets: error : Tool exited with code: 2. Output: trouble writing output: Too many field references: 100702; max is 65536. You may try using --multi-dex option. To fix this locally, I have enabled multi dex locally in Visual Studio. Changing the setting in the Visual Studio UI makes this change in our ActivityApp.Droid.csproj file: `True` However, my Bitrise builds are still failing with the same error. Why doesn’t setting True in our .Droid.csproj file get picked up by Bitrise at build time and how can I fix this? ---
**Author:** ![tracegmail](https://sea2.discourse-cdn.com/flex016/user_avatar/discuss.bitrise.io/tracegmail/32/1757_2.png) [@tracegmail](https://discuss.bitrise.io/u/tracegmail)\ **Post date:** [July 18, 2017, 7:43am UTC](https://discuss.bitrise.io/t/bitrise-not-enabling-multi-dex/2289/3 "2017-07-18T07:43:22Z")
It seems like Bitrise should be picking the MultiDex setting automatically, because changing the setting in the Visual Studio UI makes this change in the .Droid.csproj file: True ---
**Author:** ![tamaspapik](https://sea2.discourse-cdn.com/flex016/user_avatar/discuss.bitrise.io/tamaspapik/32/251_2.png) [@tamaspapik](https://discuss.bitrise.io/u/tamaspapik)\ **Post date:** [July 18, 2017, 7:50am UTC](https://discuss.bitrise.io/t/bitrise-not-enabling-multi-dex/2289/4 "2017-07-18T07:50:20Z")
Hey! What version do you use? Because xamarin had this issue not a long ago: [https://bugzilla.xamarin.com/show\_bug.cgi?id=56391](https://bugzilla.xamarin.com/show_bug.cgi?id=56391) Is it possible that your xamarin version is \<=4.5.0 ? ---
**Author:** ![clee46](https://avatars.discourse-cdn.com/v4/letter/c/c89c15/32.png) [@clee46](https://discuss.bitrise.io/u/clee46)\ **Post date:** [July 19, 2017, 5:05am UTC](https://discuss.bitrise.io/t/bitrise-not-enabling-multi-dex/2289/5 "2017-07-19T05:05:54Z")
> [@tamaspapik](#): > > What version do you use? Thanks for your reply. I am using Xamarin 4.5.0.486 (fec6f88) and Visual Studio Professional 2017 Version 15.2 (26430.16) with .NET Framework Version 4.7.02046 I tried the fix in the post you referenced - I set both of these flags in our android.csproj file: ``` true true ``` to no avail. The build fails at the same point in the workflow (Xamarin Archive step) with the message: ``` Target _CompileToDalvikWithDx: Created directory "obj/Release/proguard" Tool /usr/bin/java execution started with arguments: -jar /Users/vagrant/Library/Developer/Xamarin/android-sdk-macosx/build-tools/25.0.2//lib/dx.jar --no-strict --dex --output=obj/Release/android/bin obj/Release/android/bin/classes /Library/Frameworks/Mono.framework/External/xbuild-frameworks/MonoAndroid/v7.1/mono.android.jar obj/Release/ __library_projects__ /Bolts.AppLinks/library_project_imports/bin/classes.jar obj/Release/ __library_projects__ /Bolts.Tasks/library_project_imports/bolts-tasks.jar obj/Release/ __library_projects__ /GlideAssembly/library_project_imports/glide-3.7.0.jar obj/Release/ __library_projects__ /Square.OkHttp/library_project_imports/okhttp.jar obj/Release/ __library_projects__ /Square.OkIO/library_project_imports/okio.jar obj/Release/ __library_projects__ /Square.Picasso/library_project_imports/picasso-2.5.2.jar obj/Release/ __library_projects__ /XFrame.Braintree.BrowserSwitch.Droid/library_project_imports/bin/classes.jar obj/Release/ __library_projects__ /XFrame.Braintree.Card.Form.Droid/library_project_imports/bin/classes.jar obj/Release/ __library_projects__ /XFrame.Braintree.Core.Droid/library_project_imports/bin/classes.jar obj/Release/ __library_projects__ /XFrame.Braintree.Droid/library_project_imports/bin/classes.jar obj/Release/ __library_projects__ /XFrame.Braintree.DropIn.Droid/library_project_imports/bin/classes.jar obj/Release/ __library_projects__ /XFrame.PayPalOneTouch/library_project_imports/bin/classes.jar obj/Release/ __library_projects__ /Xamarin.Android.Support.Animated.Vector.Drawable/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.Android.Support.Compat/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.Android.Support.Core.UI/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.Android.Support.Core.Utils/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.Android.Support.CustomTabs/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.Android.Support.Design/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.Android.Support.Fragment/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.Android.Support.Media.Compat/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.Android.Support.Transition/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.Android.Support.Vector.Drawable/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.Android.Support.v4/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.Android.Support.v7.AppCompat/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.Android.Support.v7.RecyclerView/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.Facebook/library_project_imports/bin/classes.jar obj/Release/ __library_projects__ /Xamarin.Firebase.Common/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.Firebase.Iid/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.Firebase.Messaging/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.GooglePlayServices.Base/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.GooglePlayServices.Basement/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.GooglePlayServices.Identity/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.GooglePlayServices.Maps/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.GooglePlayServices.Tasks/library_project_imports/classes.jar obj/Release/ __library_projects__ /Xamarin.GooglePlayServices.Wallet/library_project_imports/classes.jar /Users/vagrant/.local/share/Xamarin/Xamarin.Android.Support.v7.CardView/23.4.0.0/embedded/classes.jar trouble writing output: Too many field references: 100734; max is 65536. You may try using --multi-dex option. ``` It’s not clear whether Bitrise is recognizing the flags I’ve set or not. Any ideas what is going on? ---
**Author:** ![clee46](https://avatars.discourse-cdn.com/v4/letter/c/c89c15/32.png) [@clee46](https://discuss.bitrise.io/u/clee46)\ **Post date:** [July 19, 2017, 5:54pm UTC](https://discuss.bitrise.io/t/bitrise-not-enabling-multi-dex/2289/6 "2017-07-19T17:54:20Z")
With help from @tamaspapik, fixed the issue - I needed to set the multi-dex flag for _all_ targets (debug/release/all cpus/x-86). ---
**Author:** ![viktorbenei](https://sea2.discourse-cdn.com/flex016/user_avatar/discuss.bitrise.io/viktorbenei/32/18_2.png) [@viktorbenei](https://discuss.bitrise.io/u/viktorbenei)\ **Post date:** [July 19, 2017, 5:56pm UTC](https://discuss.bitrise.io/t/bitrise-not-enabling-multi-dex/2289/7 "2017-07-19T17:56:04Z")
Thanks for reporting it here @clee46! 😊