# java.lang.ClassNotFoundException: us.zoom.net.AndroidNetworkLibrary

**URL:** <https://devforum.zoom.us/t/java-lang-classnotfoundexception-us-zoom-net-androidnetworklibrary/45108>\
**Category:** Android\
**Created:** [March 8, 2021, 6:33am UTC](https://devforum.zoom.us/t/java-lang-classnotfoundexception-us-zoom-net-androidnetworklibrary/45108 "2021-03-08T06:33:33Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![zhero1100](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/zhero1100/32/23042_2.png) [@zhero1100](https://devforum.zoom.us/u/zhero1100)\
**Post date:** [March 8, 2021, 6:33am UTC](https://devforum.zoom.us/t/java-lang-classnotfoundexception-us-zoom-net-androidnetworklibrary/45108/1 "2021-03-08T06:33:34Z")

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**Description**  
app going to crash

**Which Client Android SDK version?**  
java.lang.RuntimeException: Unable to start activity ComponentInfo{[in.drona.edu/in.drona.edu.activity.zoom.ui.InitAuthSDKActivity](http://in.drona.edu/in.drona.edu.activity.zoom.ui.InitAuthSDKActivity)}: java.lang.ClassNotFoundException: us.zoom.net.AndroidNetworkLibrary

at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3308)

at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3457)

at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)

at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)

at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)

at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2044)

at android.os.Handler.dispatchMessage(Handler.java:107)

at android.os.Looper.loop(Looper.java:223)

at android.app.ActivityThread.main(ActivityThread.java:7562)

at java.lang.reflect.Method.invoke(Native Method)

at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)

at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)

Caused by: java.lang.ClassNotFoundException: us.zoom.net.AndroidNetworkLibrary

at java.lang.Runtime.nativeLoad(Native Method)

at java.lang.Runtime.nativeLoad(Runtime.java:1115)

at java.lang.Runtime.loadLibrary0(Runtime.java:1069)

at java.lang.Runtime.loadLibrary0(Runtime.java:1007)

at java.lang.System.loadLibrary(System.java:1667)

at com.zipow.videobox.mainboard.Mainboard.r(SourceFile:44)

at com.zipow.videobox.mainboard.Mainboard.initialize(SourceFile:6)

at com.zipow.videobox.VideoBoxApplication.initSDKMainboard(SourceFile:7)

at com.zipow.videobox.VideoBoxApplication.A(SourceFile:6)

at com.zipow.videobox.VideoBoxApplication.P(SourceFile:10)

at com.zipow.videobox.VideoBoxApplication.initializeForSDK(SourceFile:4)

at us.zoom.sdk.ZoomSDK.initialize(SourceFile:42)

at in.drona.edu.activity.zoom.initsdk.InitAuthSDKHelper.initSDK(SourceFile:10)

at in.drona.edu.activity.zoom.ui.InitAuthSDKActivity.onCreate(SourceFile:20)

at android.app.Activity.performCreate(Activity.java:7893)

at android.app.Activity.performCreate(Activity.java:7880)

at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1307)

at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3283)

**To Reproduce(If applicable)**  
Steps to reproduce the behavior:

1. Go to ‘…’
2. Click on ‘…’
3. Scroll down to ‘…’
4. See error

**Screenshots**  
If applicable, add screenshots to help explain your problem.

**Smartphone (please complete the following information):**

- Device: [e.g. Pixel 5]
- OS: [e.g. Android 11]

**Additional context**  
Add any other context about the problem here.

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<div class="post-metadata">

**Author:** ![jon.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/jon.zoom/32/13495_2.png) [@jon.zoom](https://devforum.zoom.us/u/jon.zoom)\
**Post date:** [March 8, 2021, 5:54pm UTC](https://devforum.zoom.us/t/java-lang-classnotfoundexception-us-zoom-net-androidnetworklibrary/45108/2 "2021-03-08T17:54:03Z")

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Hi @zhero1100,

This appears to be a duplicate of your other post, so I am locking it in favor of the other. 🙂

Thanks!

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<div class="post-metadata">

**Author:** ![jon.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/jon.zoom/32/13495_2.png) [@jon.zoom](https://devforum.zoom.us/u/jon.zoom)\
**Post date:** [March 8, 2021, 5:54pm UTC](https://devforum.zoom.us/t/java-lang-classnotfoundexception-us-zoom-net-androidnetworklibrary/45108/3 "2021-03-08T17:54:06Z")

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Closed on March 8, 2021, 5:54pm UTC