Error Codes and Warning Codes

When you make an API call to access an Agora SDK, the SDK may return error codes or warning codes:

• Error codes are returned when a problem that cannot be recovered without app intervention has occurred.
• Warning codes are returned when a problem that might be resolved automatically has occurred. Warning codes provide information but normally do not require any action.

This article provides descriptions and troubleshooting tips for common Agora SDK error and warning codes. If you receive a response that is not included here, Agora recommends you contact support@agora.io so that our technical support team can help resolve the issue.

An error code can be a negative number. In such a case, it should be read as if it were positive. For example, if the SDK returns error code -2, you should refer to 2 in the error code table.

This section applies to the Agora Video Calling SDKs designed for:

• Native platforms, such as Android, iOS, macOS, and Windows.
• Third-party frameworks (third-party platforms where native app code is wrapped), such as Electron, Unity, React Native, and Flutter.

The error and warning codes may be returned in the following ways:

• The return value of a method call, represented by a negative number. In such a case, it should be read as if it were positive.
• An onError or onWarning callback.

Error code	Cause and troubleshooting tips
0	No error occurs.
1	A general error occurs (no specified reason). Try calling the method again.
2	An invalid parameter is used. For example, the specified channel name includes illegal characters. Please reset the parameters.
3	The SDK is not ready due to one of the following reasons: RtcEngine fails to initialize. Please re-initialize RtcEngine. No user has joined the channel when the method is called. Please check your code logic. Users have not left the channel when the rate and complain methods are called. Please check your code logic. The audio module is disabled. The program is not complete.
4	RtcEngine does not support the request due to one of the following reasons: The setBeautyEffectOptions method is called on devices running versions earlier than Android 5.0. Please check the Android version. The built-in encryption mode is incorrect or the SDK fails to load the external encryption library. Please check the encryption mode setting or reload the external encryption library.
5	The request is rejected due to one of the following reasons: RtcEngine fails to initialize. Please re-initialize RtcEngine. The channel name is set as the empty string "" when creating the RtcChannel instance. Please reset the channel name. When the joinChannel method is called to join one of multiple channels, the specified channel name is already in use. Please reset the channel name. The joinChannel method in RtcEngine is called to join another channel after an RtcChannel instance has been created to join a channel and a stream has been published in the channel. A user whose role is not audience calls the switchChannel method. Ensure that the user role is audience before calling the switchChannel method.
6	The buffer size is insufficient to store the returned data.
7	A method is called before the initialization of RtcEngine. Ensure that the RtcEngine instance is created and initialized before calling the method.
9	Permission to access is not granted. Check whether your app has access to the audio and video device.
10	A timeout occurs. Some API calls require the SDK to return the execution result. This error occurs if the SDK takes too long (more than 10 seconds) to return the result.
17	The request to join the channel is rejected. Typical causes include: The user is already in the channel and still calls a method (for example, joinChannel) to join the channel. Stop calling the method to clear this error. The user tries to join a channel during a call test. To join a channel, the call test must be ended by calling stopEchoTest.
18	The request to leave the channel is rejected. Typical causes include: The user has left the channel but still calls a method (for example, leaveChannel) to leave the channel. Stop calling the method to clear this error. The user is not in the channel. In this case, no extra operation is needed.
19	Resources are already in use.
20	The request is abandoned by the SDK, possibly because the request has been sent too frequently.
21	RtcEngine fails to initialize and has crashed because of specific Windows firewall settings.
22	The SDK fails to allocate resources because your app uses too many system resources or system resources are insufficient.
101	The specified App ID is invalid. Please rejoin the channel with a valid App ID.
102	The specified channel name is invalid, possibly because the data types of some parameters are incorrect. Please rejoin the channel with a valid channel name.
103	RtcEngine fails to get server resources in the specified region. Try another region when initializing RtcEngine.
109	The current token has expired. Please apply for a new token on the server and call renewToken. Note: This method is deprecated as of v2.4.1. Please use CONNECTION_CHANGED_TOKEN_EXPIRED(9) in the onConnectionStateChanged callback instead.
110	The token is invalid due to one of the following reasons: App Certificate is enabled in Agora Console, but the code still uses App ID for authentication. Once App Certificate is enabled for a project, you must use token-based authentication. The uid used to generate the token is not the same as the one used to join the channel. Note: This method is deprecated as of v2.4.1. Please use CONNECTION_CHANGED_INVALID_TOKEN(8) in the onConnectionStateChanged callback instead.
111	The network connection is interrupted. This error occurs when the SDK has connected to the server but lost connection for more than 4 seconds.
112	The network connection is lost. This error occurs when the connection is interrupted and the SDK cannot reconnect to the server within 10 seconds.
113	The user is not in the channel when calling the method.
114	The data size exceeds 1024 bytes when calling the sendStreamMessage method.
115	The data bitrate exceeds 6 Kbps when calling the sendStreamMessage method.
116	More than five data streams are created when calling the createDataStream method.
117	The data stream transmission times out.
119	Switching roles fails. Note: This method is deprecated as of v3.7.0. Use CLIENT_ROLE_CHANGE_FAILED_REASON in the onConnectionStateChanged callback instead.
120	Decryption fails. The user may have entered an incorrect password to join the channel. Check the entered password or tell the user to try rejoining the channel.
123	The user is banned from the server. This error occurs when the user is kicked out of the channel from the server.
134	The user account is invalid, possibly because it contains invalid parameters.

Error code	Cause
124	Incorrect watermark file parameter.
125	Incorrect watermark file path.
126	Incorrect watermark file format. The SDK only supports adding PNG files as the watermark image.
127	Incorrect watermark file information.
128	Incorrect watermark file data format.
129	An error occurs when reading the watermark file.

Error code	Cause and troubleshooting tips
130	Stream encryption is enabled when the user calls the addPublishStreamUrl method. The SDK does not support pushing encrypted streams to CDN.
151	An error occurs when pushing streams to CDN. Please remove the current URL address by calling the removePublishStreamUrl method, and then add a new address by calling the addPublishStreamUrl method.
152	The host has published more than 10 URLs. Please delete the unnecessary URLs before adding new ones.
153	The host is making changes to other hosts' URLs, such as updating parameters and disabling a URL. Please check your app logic.
154	An error occurs on Agora's streaming server. Call the addPublishStreamUrl method to push the stream again.
155	The server fails to find the stream.
156	The URL format is incorrect. Please check the format.

Error code	Cause and troubleshooting tips
160	The client is already recording audio. To start a new recording, call stopAudioRecording to stop the current recording first, and then call startAudioRecording.
1005	A general error occurs (no specified reason). Check whether the audio device is already in use by another app, or try rejoining the channel.
1006	An error occurs when using Java resources. Check whether the audio device storage is sufficient, or restart the audio device.
1007	The sampling frequency setting is incorrect.
1008	An error occurs when initializing the playback device. Check whether the playback device is already in use by another app, or try rejoining the channel.
1009	An error occurs when starting the playback device. Check the playback device.
1010	An error occurs when stopping the playback device.
1011	An error occurs when initializing the recording device. Check the recording device, or try rejoining the channel.
1012	An error occurs when starting the recording device. Check the recording device.
1013	An error occurs when stopping the recording device.
1015	A playback error occurs. Check the playback device, or try rejoining the channel.
1017	A recording error occurs. Check the recording device, or try rejoining the channel.
1018	Recording fails.
1022	An error occurs when initializing the loopback device.
1023	An error occurs when starting the loopback device.
1027	The application does not have permission to use the microphone. Remind your user to grant permission and rejoin the channel.
1033	The local audio capture device is occupied by another application. Remind your user to leave the channel, stop the audio capture in another application, and rejoin the channel in sequence.
1101	An error occurs when using Java resources. Check whether the audio device storage is sufficient, or restart the audio device.
1108	An exception occurred in the audio capture thread. Remind your user to rejoin the channel.
1109	An exception occurred in the audio playback thread. Remind your user to rejoin the channel.
1111	Failed to start the local audio capture. Remind your user to rejoin the channel.
1112	Failed to start the local audio playback. Remind your user to rejoin the channel.
1115	Recording fails. Check whether there is permission to record or whether there is a problem with the network connection.
1153	Failed to create Audio Recorder. Remind your user to rejoin the channel.
1156	Failed to start the local audio capture. Remind your user to rejoin the channel.
1157	Failed to create Audio Player. Remind your user to rejoin the channel.
1160	Failed to start the local audio playback. Remind your user to rejoin the channel.
1201	The current device does not support audio input, possibly because the configuration of the Audio Session category is incorrect, or because the device is already in use. Agora recommends terminating all background apps and rejoining the channel.
1206	Audio Session fails to launch. Check your recording settings.
1210	An error occurs when initializing the audio device, usually because some audio device parameters are incorrect.
1213	An error occurs when re-initializing the audio device, usually because some audio device parameters are incorrect.
1214	An error occurs when restarting the audio device, usually because the Audio Session category setting is not compatible with the audio device settings.
1301	The audio device module fails to initialize. Disable and re-enable the audio device, or restart the device on which your app is running.
1303	The audio device module fails to terminate. Disable and re-enable the audio device, or restart the device on which your app is running.
1306	The playback device fails to initialize. Disable and re-enable the audio device, or restart the device on which your app is running.
1307	Initialization fails because no audio playback device is available. Ensure that a proper audio device is connected.
1309	Recording fails to start. Disable and re-enable the audio device, or restart the device on which your app is running.
1311	The system fails to create a recording thread, possibly because the device storage or performance is insufficient. Restart the device or use a different one.
1314	Recording fails to start. Possible solutions: Disable and re-enable the audio device. Restart the device on which your app is running. Update the sound card driver.
1319	The system fails to create a playback thread, possibly because the device storage or performance is insufficient. Restart the device, or use a different one.
1320	Audio playback fails to start. Possible solutions: Disable and re-enable the audio device. Restart the device on which your app is running. Upgrade the sound card driver.
1322	No recording device is available. Ensure that a proper audio device is connected.
1323	No playback device is available. Ensure that a proper audio device is connected.
1351	The audio device module fails to initialize. Possible solutions: Disable and re-enable the audio device. Restart the device on which your app is running. Upgrade the sound card driver.
1353	The recording device fails to initialize. Possible solutions: Disable and re-enable the audio device. Restart the device on which your app is running. Upgrade the sound card driver.
1354	The microphone fails to initialize. Possible solutions: Disable and re-enable the audio device. Restart the device on which your app is running. Upgrade the sound card driver.
1355	The playback device fails to initialize. Possible solutions: Disable and re-enable the audio device. Restart the device on which your app is running. Upgrade the sound card driver.
1356	The speaker fails to initialize. Possible solutions: Disable and re-enable the audio device. Restart the device on which your app is running. Upgrade the audio card driver.
1357	Recording fails to start. Possible solutions: Disable and re-enable the audio device. Restart the device on which your app is running. Upgrade the sound card driver.
1358	Audio playback fails to start. Possible solutions: Disable and re-enable the audio device. Restart the device on which your app is running. Upgrade the sound card driver.
1359	No recording device is available. Check whether the recording device is connected or whether it is already in use by another app.
1360	No playback device is available. Check whether the playback device is connected or whether it is already in use by another app.
1735	The Windows Audio service is disabled. You need to either enable the Windows Audio service or restart the device.

Error code	Cause and troubleshooting tips
1003	The camera fails to start. Check whether the camera is already in use by another app, or try rejoining the channel. Note: This method is deprecated as of v2.4.1. Please use LOCAL_VIDEO_STREAM_ERROR_CAPTURE_FAILURE(4) in the onLocalVideoStateChanged callback instead.
1004	The video rendering module fails to start.
1501	Permission to access the camera is not granted. Check whether permission to access the camera permission is granted.
1502	The camera is already in use. Note: This method is deprecated as of v2.4.1. Please use LOCAL_VIDEO_STREAM_ERROR_DEVICE_BUSY(3) in the onLocalVideoStateChanged callback instead.
1600	An unknown error occurs.
1601	Video encoding initialization fails. Try rejoining the channel.
1602	Video encoding fails. Try rejoining the channel.
1603	Video encoding settings fail to be applied.
1736	The SDK does not support you to set excludeWindowList to block windows on a device with multiple graphics cards.

Error code	Cause and troubleshooting tips
157	The necessary dynamic libraries have not been integrated. For example, you have not integrated the deep-learning noise reduction dynamic library into your project before calling enableDeepLearningDenoise. You have not integrated the super resolution dynamic library into your project before calling enableRemoteSuperResolution.
1001	The SDK fails to load the media engine.
1002	The SDK fails to start an audio/video call after launching the media engine. Try rejoining the channel.

Warning code	Cause and troubleshooting tips
8	The specified view is invalid. The video call function requires a specified view.
16	The SDK fails to initialize the video call function, possibly due to a lack of resources. When this warning occurs, users cannot make a video call, but the voice call function is not affected.
20	The request is pending, usually because some modules are not ready, causing the SDK to postpone processing the request.
103	No channel resources are available, possibly because the server fails to allocate channel resources.
104	A timeout occurs when the SDK is searching for a specified channel. When receiving a request to join a channel, the SDK searches for the channel first. This warning usually occurs when the network connection is too poor for the SDK to connect to the server.
105	The server rejects the request to search for the channel because the server cannot process the request or the request is illegal. Note: This method is deprecated as of v2.4.1. Please use CONNECTION_CHANGED_REJECTED_BY_SERVER(10) in the onConnectionStateChanged callback instead.
106	A timeout occurs when joining the channel. Once the specified channel is found, the SDK starts joining the channel. This warning usually occurs when the network connection is too poor for the SDK to connect to the server.
107	The server rejects the request to join the channel because the server cannot process this request or the request is illegal.
111	A timeout occurs when switching to the live video.
118	A timeout occurs when setting user roles in the live-streaming profile.
121	The SDK fails to join a channel.
122	The SDK is trying to connect to another server.
131	The channel connection cannot be recovered.
132	The IP address has changed.
133	The port has changed.
701	An error occurs when opening the audio-mixing file.
1014	A playback device warning occurs.
1016	A recording device warning occurs.
1019	No data is recorded. Possible solutions: Check whether the microphone is already in use. Check whether permission to record is granted. Check whether the recording device works properly. Restart the device.
1020	The audio playback frequency is abnormal due to high CPU usage. Recommended solutions: Close other apps that are consuming CPU resources. Check whether the audio module is enabled in your app. Try rejoining the channel.
1021	The audio recording frequency is abnormal due to high CPU usage. Recommended solutions: Close other apps that are consuming CPU resources. Check whether the audio module is enabled in your app. Try rejoining the channel.
1025	The audio capture or playback is interrupted by a system call. If the audio capture or playback is required, remind your user to hang up the phone.
1029	The Audio Session category is not set as AVAudioSessionCategoryPlayAndRecord. During a call, RtcEngine monitors the Audio Session category. If the category is modified, this warning occurs, and RtcEngine automatically sets it back to AVAudioSessionCategoryPlayAndRecord.
1031	The recording volume is too low. Check whether the user's microphone is muted or whether the user has enabled microphone augmentation.
1032	The playback volume is too low. Check whether the user's microphone is muted or whether the user has enabled microphone augmentation.
1033	The local audio capture device is occupied by another application. Remind your user to leave the channel, stop the audio capture in another application, and rejoin the channel in sequence.
1040	No audio data is available. Possible solutions: Disable and re-enable the audio device. Restart the device on which your app is running. Update the sound card driver.
1051	Audio feedback is detected during recording. Ensure that users in the same channel maintain sufficient physical distance between themselves.
1052	The system threads for recording and playback cannot be arranged due to high CPU usage.
1053	A residual echo is detected. This may be caused by the delayed scheduling of system threads or a signal overflow.
1323	No playback device is available. Ensure that a proper audio device is connected.
1324	The recording device is released improperly. Possible solutions: Disable and re-enable the audio device. Restart the device on which your app is running. Update the sound card driver.
1610	The original resolution of the remote user's video is beyond the range where super resolution can be applied.
1611	Super resolution is already being used to boost another remote user's video.
1612	The device does not support using super resolution.

• If you use the Agora Video Calling Web SDK 3.x or earlier versions, see error codes and warning codes.
• If you use the Agora Video Calling Web SDK 4.x, see error codes.