diff --git a/core/res/res/values/strings.xml b/core/res/res/values/strings.xml
index 459b48fc54236..ae28797c32aad 100644
--- a/core/res/res/values/strings.xml
+++ b/core/res/res/values/strings.xml
@@ -4585,6 +4585,9 @@
     <!-- Accessibility title for the autofill dialog used to select a list of options to autofill an activity. [CHAR LIMIT=NONE] -->
     <string name="autofill_picker_accessibility_title">Autofill options</string>
 
+    <!-- Toast message shown when user manually request autofill but service could not figure out the data that would autofill the screen contents. [CHAR LIMIT=NONE] -->
+    <string name="autofill_error_cannot_autofill">Contents can\u2019t be autofilled</string>
+
     <!-- Title for the autofill save dialog shown when the the contents of the activity can be saved
          by an autofill service, but the service does not know what the activity represents [CHAR LIMIT=NONE] -->
     <string name="autofill_save_title">Save to <xliff:g id="label" example="MyPass">%1$s</xliff:g>?</string>
diff --git a/core/res/res/values/symbols.xml b/core/res/res/values/symbols.xml
index fa13fbf93267b..741115c6f1353 100644
--- a/core/res/res/values/symbols.xml
+++ b/core/res/res/values/symbols.xml
@@ -2874,6 +2874,7 @@
   <java-symbol type="id" name="autofill_save_no" />
   <java-symbol type="id" name="autofill_save_yes" />
   <java-symbol type="id" name="autofill_save_close" />
+  <java-symbol type="string" name="autofill_error_cannot_autofill" />
   <java-symbol type="string" name="autofill" />
   <java-symbol type="string" name="autofill_picker_accessibility_title " />
   <java-symbol type="string" name="autofill_save_title" />
diff --git a/services/autofill/java/com/android/server/autofill/Session.java b/services/autofill/java/com/android/server/autofill/Session.java
index 801769cc42e12..b02db18a4c86e 100644
--- a/services/autofill/java/com/android/server/autofill/Session.java
+++ b/services/autofill/java/com/android/server/autofill/Session.java
@@ -56,6 +56,7 @@ import android.view.autofill.AutofillValue;
 import android.view.autofill.IAutoFillManagerClient;
 import android.view.autofill.IAutofillWindowPresenter;
 
+import com.android.internal.R;
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.logging.MetricsLogger;
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
@@ -181,6 +182,9 @@ final class Session implements RemoteFillService.FillServiceCallbacks, ViewState
     public void onFillRequestSuccess(@Nullable FillResponse response,
             @NonNull String servicePackageName) {
         if (response == null) {
+            if ((mFlags & FLAG_MANUAL_REQUEST) != 0) {
+                getUiForShowing().showError(R.string.autofill_error_cannot_autofill);
+            }
             // Nothing to be done, but need to notify client.
             notifyUnavailableToClient();
             removeSelf();
diff --git a/services/autofill/java/com/android/server/autofill/ui/AutoFillUI.java b/services/autofill/java/com/android/server/autofill/ui/AutoFillUI.java
index 832ff9a4435c3..257256dc58e74 100644
--- a/services/autofill/java/com/android/server/autofill/ui/AutoFillUI.java
+++ b/services/autofill/java/com/android/server/autofill/ui/AutoFillUI.java
@@ -86,6 +86,13 @@ public final class AutoFillUI {
         });
     }
 
+    /**
+     * Displays an error message to the user.
+     */
+    public void showError(int resId) {
+        showError(mContext.getString(resId));
+    }
+
     /**
      * Displays an error message to the user.
      */