Ad load errors

  • When an ad fails to load, a callback is triggered, providing a LoadAdError object containing detailed error information.

  • The LoadAdError object includes details such as the error domain, code, message, response information, and the cause of the error.

  • Verbose logging in Google Mobile Ads SDK version 23.5.0 and later includes a stack trace to help identify the source of ad loading errors.

  • Common error logs, their descriptions, and suggested solutions are provided to assist in debugging ad loading issues.

  • For errors originating from a mediation ad source, it is recommended to contact their support team for assistance.
Select platform: Android iOS Unity Flutter

In cases where an ad fails to load, a callback is called which provides a LoadAdError object.

For AdManagerAdView, the following is called:

Kotlin

fun onAdFailedToLoad(error: LoadAdError)

Java

public void onAdFailedToLoad(LoadAdError adError);

The following example shows the information available when an ad fails to load:

Kotlin

override fun onAdFailedToLoad(error: LoadAdError) {
  // Gets the domain from which the error came.
  val errorDomain = error.domain
  // Gets the error code. See
  // https://developers.google.com/admob/android/reference/com/google/android/gms/ads/AdRequest#constant-summary
  // for a list of possible codes.
  val errorCode = error.code
  // Gets an error message.
  // For example "Account not approved yet". See
  // https://support.google.com/admob/answer/9905175 for explanations of
  // common errors.
  val errorMessage = error.message
  // Gets additional response information about the request. See
  // https://developers.google.com/admob/android/response-info
  // information.
  val responseInfo = error.responseInfo
  // Gets the cause of the error, if available.
  val cause = error.cause
  // All of this information is available using the error's toString() method.
  Log.d("Ads", error.toString())
}
BannerSnippets.kt

Java

@Override
public void onAdFailedToLoad(@NonNull LoadAdError adError) {
  // Gets the domain from which the error came.
  String errorDomain = adError.getDomain();
  // Gets the error code. See
  // https://developers.google.com/admob/android/reference/com/google/android/gms/ads/AdRequest#constant-summary
  // for a list of possible codes.
  int errorCode = adError.getCode();
  // Gets an error message.
  // For example "Account not approved yet". See
  // https://support.google.com/admob/answer/9905175 for explanations of
  // common errors.
  String errorMessage = adError.getMessage();
  // Gets additional response information about the request. See
  // https://developers.google.com/admob/android/response-info
  // information.
  ResponseInfo responseInfo = adError.getResponseInfo();
  // Gets the cause of the error, if available.
  AdError cause = adError.getCause();
  // All of this information is available using the error's toString() method.
  Log.d("Ads", adError.toString());
}
BannerSnippets.java

Debug common error logging messages

In version 23.5.0 of Google Mobile Ads SDK, verbose logging was enhanced to include a stack trace of where the ad fails to load. These message don't indicate a crash, but rather identify the unique source of the error. The following table provides common error logs, descriptions, and suggested actions for resolution:

Error log Description Suggested action(s)
com.google.android.gms.ads.nonagon.render.cp: * The ad server did not return an ad or any mediation ad sources to request. For details to troubleshoot no fills, see Troubleshoot unfilled impressions.
com.google.android.gms.ads.nonagon.render.e: * All ad sources in the mediation waterfall failed to load. The specific error represents the last ad source that failed. For details about logging each mediation ad source's failure reason, see Response Info.
com.google.android.gms.ads.internal.util.*: Unable to obtain a JavascriptEngine. The ad request was unsuccessful because WebView is not allowed in privileged processes.
  • Check your internet settings.
  • Remove android:sharedUserId="android.uid.system" and install app as system app.
The ad request was unsuccessful because of a slow network connection. Try improving your internet connection and try again.
com.google.android.gms.ads.nonagon.load.a The ad request timed out.
com.google.android.gms.ads.internal.util.*: Error while connecting to ad server: Unable to resolve host "pubads.g.doubleclick.net": No address associated with hostname The ad request was unsuccessful due to network connectivity.
com.google.android.gms.ads.internal.util.*: Error building request URL: Cannot determine request type. Is your ad unit id correct? The ad unit ID did not match an expected regular expression. Check if your ad unit ID is correct.
com.google.android.gms.ads.internal.render.bt: Unable to instantiate mediation adapter class. Google Mobile Ads SDK can't find the mediation adapter.
  • Diagnose which adapters Google Mobile Ads SDK can't find using View available adapters in ad inspector.
  • Add missing adapters to your project. To read instructions for how to complete this step for each ad source, see Network details.
com.google.android.gms.internal.ads.*: Received error HTTP response code: 403 Ad Manager servers rejected the request. Try again later. If consistently reproducible, capture the request URL using ad inspector and contact support.