diff --git a/src/com/android/launcher3/BaseDraggingActivity.java b/src/com/android/launcher3/BaseDraggingActivity.java
index 5055309..f0b3afd 100644
--- a/src/com/android/launcher3/BaseDraggingActivity.java
+++ b/src/com/android/launcher3/BaseDraggingActivity.java
@@ -170,7 +170,7 @@
             getUserEventDispatcher().logAppLaunch(v, intent);
             getStatsLogManager().logAppLaunch(v, intent);
             return true;
-        } catch (ActivityNotFoundException|SecurityException e) {
+        } catch (NullPointerException|ActivityNotFoundException|SecurityException e) {
             Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
             Log.e(TAG, "Unable to launch. tag=" + item + " intent=" + intent, e);
         }
diff --git a/src/com/android/launcher3/compat/PackageInstallerCompat.java b/src/com/android/launcher3/compat/PackageInstallerCompat.java
index 7dad7e9..4f4d641 100644
--- a/src/com/android/launcher3/compat/PackageInstallerCompat.java
+++ b/src/com/android/launcher3/compat/PackageInstallerCompat.java
@@ -19,6 +19,7 @@
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.pm.PackageInstaller;
+import android.os.UserHandle;
 
 import java.util.HashMap;
 import java.util.List;
@@ -48,6 +49,11 @@
      */
     public abstract HashMap<String, PackageInstaller.SessionInfo> updateAndGetActiveSessionCache();
 
+    /**
+     * @return an active SessionInfo for {@param pkg} or null if none exists.
+     */
+    public abstract PackageInstaller.SessionInfo getActiveSessionInfo(UserHandle user, String pkg);
+
     public abstract void onStop();
 
     public static final class PackageInstallInfo {
diff --git a/src/com/android/launcher3/compat/PackageInstallerCompatVL.java b/src/com/android/launcher3/compat/PackageInstallerCompatVL.java
index a34ca50..8a5eabc 100644
--- a/src/com/android/launcher3/compat/PackageInstallerCompatVL.java
+++ b/src/com/android/launcher3/compat/PackageInstallerCompatVL.java
@@ -64,9 +64,9 @@
     @Override
     public HashMap<String, SessionInfo> updateAndGetActiveSessionCache() {
         HashMap<String, SessionInfo> activePackages = new HashMap<>();
-        UserHandle user = Process.myUserHandle();
+        UserHandle primaryUser = Process.myUserHandle();
         for (SessionInfo info : getAllVerifiedSessions()) {
-            addSessionInfoToCache(info, user);
+            addSessionInfoToCache(info, Utilities.ATLEAST_Q ? info.getUser() : primaryUser);
             if (info.getAppPackageName() != null) {
                 activePackages.put(info.getAppPackageName(), info);
                 mActiveSessions.put(info.getSessionId(), info.getAppPackageName());
@@ -75,6 +75,19 @@
         return activePackages;
     }
 
+    public SessionInfo getActiveSessionInfo(UserHandle user, String pkg) {
+        for (SessionInfo info : getAllVerifiedSessions()) {
+            boolean match = pkg.equals(info.getAppPackageName());
+            if (Utilities.ATLEAST_Q && !user.equals(info.getUser())) {
+                match = false;
+            }
+            if (match) {
+                return info;
+            }
+        }
+        return null;
+    }
+
     @Thunk void addSessionInfoToCache(SessionInfo info, UserHandle user) {
         String packageName = info.getAppPackageName();
         if (packageName != null) {
diff --git a/src/com/android/launcher3/touch/ItemClickHandler.java b/src/com/android/launcher3/touch/ItemClickHandler.java
index 2895a89..03493a5 100644
--- a/src/com/android/launcher3/touch/ItemClickHandler.java
+++ b/src/com/android/launcher3/touch/ItemClickHandler.java
@@ -25,9 +25,15 @@
 import static com.android.launcher3.model.AppLaunchTracker.CONTAINER_ALL_APPS;
 
 import android.app.AlertDialog;
+import android.content.ActivityNotFoundException;
+import android.content.Context;
 import android.content.Intent;
+import android.content.pm.LauncherApps;
+import android.content.pm.PackageInstaller.SessionInfo;
 import android.os.Process;
+import android.os.UserHandle;
 import android.text.TextUtils;
+import android.util.Log;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Toast;
@@ -43,11 +49,12 @@
 import com.android.launcher3.LauncherAppWidgetProviderInfo;
 import com.android.launcher3.PromiseAppInfo;
 import com.android.launcher3.R;
+import com.android.launcher3.Utilities;
 import com.android.launcher3.WorkspaceItemInfo;
 import com.android.launcher3.compat.AppWidgetManagerCompat;
+import com.android.launcher3.compat.PackageInstallerCompat;
 import com.android.launcher3.folder.Folder;
 import com.android.launcher3.folder.FolderIcon;
-import com.android.launcher3.testing.TestProtocol;
 import com.android.launcher3.util.PackageManagerHelper;
 import com.android.launcher3.views.FloatingIconView;
 import com.android.launcher3.widget.PendingAppWidgetHostView;
@@ -58,6 +65,8 @@
  */
 public class ItemClickHandler {
 
+    private static final String TAG = ItemClickHandler.class.getSimpleName();
+
     /**
      * Instance used for click handling on items
      */
@@ -146,6 +155,8 @@
             startMarketIntentForPackage(v, launcher, packageName);
             return;
         }
+        UserHandle user = v.getTag() instanceof ItemInfo
+                ? ((ItemInfo) v.getTag()).user : Process.myUserHandle();
         new AlertDialog.Builder(launcher)
                 .setTitle(R.string.abandoned_promises_title)
                 .setMessage(R.string.abandoned_promise_explanation)
@@ -153,12 +164,28 @@
                         (d, i) -> startMarketIntentForPackage(v, launcher, packageName))
                 .setNeutralButton(R.string.abandoned_clean_this,
                         (d, i) -> launcher.getWorkspace()
-                                .removeAbandonedPromise(packageName, Process.myUserHandle()))
+                                .removeAbandonedPromise(packageName, user))
                 .create().show();
     }
 
     private static void startMarketIntentForPackage(View v, Launcher launcher, String packageName) {
         ItemInfo item = (ItemInfo) v.getTag();
+        if (Utilities.ATLEAST_Q) {
+            PackageInstallerCompat pkgInstaller = PackageInstallerCompat.getInstance(launcher);
+            SessionInfo sessionInfo = pkgInstaller.getActiveSessionInfo(item.user, packageName);
+            if (sessionInfo != null) {
+                LauncherApps launcherApps = launcher.getSystemService(LauncherApps.class);
+                try {
+                    launcherApps.startPackageInstallerSessionDetailsActivity(sessionInfo, null,
+                            launcher.getActivityLaunchOptionsAsBundle(v));
+                    return;
+                } catch (Exception e) {
+                    Log.e(TAG, "Unable to launch market intent for package=" + packageName, e);
+                }
+            }
+        }
+
+        // Fallback to using custom market intent.
         Intent intent = new PackageManagerHelper(launcher).getMarketIntent(packageName);
         launcher.startActivitySafely(v, intent, item, null);
     }