diff --git a/SpigotCore/SpigotCore_19/build.gradle.kts b/SpigotCore/SpigotCore_19/build.gradle.kts
index 1d696271..13a4ee47 100644
--- a/SpigotCore/SpigotCore_19/build.gradle.kts
+++ b/SpigotCore/SpigotCore_19/build.gradle.kts
@@ -22,6 +22,7 @@ plugins {
 }
 
 dependencies {
+    compileOnly(project(":CommonCore", "default"))
     compileOnly(project(":SpigotCore:SpigotCore_Main", "default"))
     compileOnly(project(":SpigotCore:SpigotCore_14", "default"))
     compileOnly(project(":SpigotCore:SpigotCore_18", "default"))
diff --git a/SpigotCore/SpigotCore_19/src/de/steamwar/core/authlib/SteamwarGameProfileRepository19.java b/SpigotCore/SpigotCore_19/src/de/steamwar/core/authlib/SteamwarGameProfileRepository19.java
new file mode 100644
index 00000000..c0d90efa
--- /dev/null
+++ b/SpigotCore/SpigotCore_19/src/de/steamwar/core/authlib/SteamwarGameProfileRepository19.java
@@ -0,0 +1,68 @@
+/*
+ *   This file is a part of the SteamWar software.
+ *
+ *   Copyright (C) 2025 SteamWar.de-Serverteam
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU Affero General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU Affero General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Affero General Public License
+ *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.core.authlib;
+
+import com.mojang.authlib.Agent;
+import com.mojang.authlib.GameProfile;
+import com.mojang.authlib.GameProfileRepository;
+import com.mojang.authlib.ProfileLookupCallback;
+import de.steamwar.Reflection;
+import de.steamwar.sql.SteamwarUser;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.Services;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class SteamwarGameProfileRepository19 extends SteamwarGameProfileRepository {
+    private static final GameProfileRepository fallback;
+    private static final Reflection.Field<Services> field;
+    private static final Services current;
+
+    static {
+        Class<?> clazz = MinecraftServer.getServer().getClass();
+        field = Reflection.getField(clazz, Services.class, 0);
+        current = field.get(MinecraftServer.getServer());
+        fallback = current.c();
+    }
+
+    @Override
+    public void inject() {
+        Services newServices = new Services(current.a(), current.b(), this, current.d(), current.paperConfigurations());
+        field.set(MinecraftServer.getServer(), newServices);
+    }
+
+    @Override
+    public void findProfilesByNames(String[] strings, Agent agent, ProfileLookupCallback profileLookupCallback) {
+        List<String> unknownNames = new ArrayList<>();
+        for (String name:strings) {
+            SteamwarUser user = SteamwarUser.get(name);
+            if(user == null) {
+                unknownNames.add(name);
+                continue;
+            }
+
+            profileLookupCallback.onProfileLookupSucceeded(new GameProfile(user.getUUID(), user.getUserName()));
+        }
+        if(!unknownNames.isEmpty()) {
+            fallback.findProfilesByNames(unknownNames.toArray(new String[0]), agent, profileLookupCallback);
+        }
+    }
+}