diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/AuthInfo.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/AuthInfo.java
index aabbe7ebd..3d9e51f61 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/AuthInfo.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/AuthInfo.java
@@ -30,16 +30,21 @@ import java.util.UUID;
  */
 @Immutable
 public class AuthInfo implements AutoCloseable {
+    public static final String USER_TYPE_MOJANG = "mojang";
+    public static final String USER_TYPE_LEGACY = "legacy";
+
 
     private final String username;
     private final UUID uuid;
     private final String accessToken;
+    private final String userType;
     private final String userProperties;
 
-    public AuthInfo(String username, UUID uuid, String accessToken, String userProperties) {
+    public AuthInfo(String username, UUID uuid, String accessToken, String userType, String userProperties) {
         this.username = username;
         this.uuid = uuid;
         this.accessToken = accessToken;
+        this.userType = userType;
         this.userProperties = userProperties;
     }
 
@@ -55,6 +60,10 @@ public class AuthInfo implements AutoCloseable {
         return accessToken;
     }
 
+    public String getUserType() {
+        return userType;
+    }
+
     /**
      * Properties of this user.
      * Don't know the difference between user properties and user property map.
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/authlibinjector/AuthlibInjectorAccount.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/authlibinjector/AuthlibInjectorAccount.java
index b7d25d37f..fe8583555 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/authlibinjector/AuthlibInjectorAccount.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/authlibinjector/AuthlibInjectorAccount.java
@@ -120,7 +120,7 @@ public class AuthlibInjectorAccount extends YggdrasilAccount {
         private final String prefetchedMeta;
 
         public AuthlibInjectorAuthInfo(AuthInfo authInfo, AuthlibInjectorArtifactInfo artifact, AuthlibInjectorServer server, String prefetchedMeta) {
-            super(authInfo.getUsername(), authInfo.getUUID(), authInfo.getAccessToken(), authInfo.getUserProperties());
+            super(authInfo.getUsername(), authInfo.getUUID(), authInfo.getAccessToken(), authInfo.getUserType(), authInfo.getUserProperties());
 
             this.artifact = artifact;
             this.server = server;
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/microsoft/MicrosoftSession.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/microsoft/MicrosoftSession.java
index d664807ab..f8ec9046c 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/microsoft/MicrosoftSession.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/microsoft/MicrosoftSession.java
@@ -110,7 +110,7 @@ public class MicrosoftSession {
     public AuthInfo toAuthInfo() {
         requireNonNull(profile);
 
-        return new AuthInfo(profile.getName(), profile.getId(), accessToken, "{}");
+        return new AuthInfo(profile.getName(), profile.getId(), accessToken, AuthInfo.USER_TYPE_MOJANG, "{}");
     }
 
     public static class User {
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/offline/OfflineAccount.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/offline/OfflineAccount.java
index 8cd8b22ff..2e7214186 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/offline/OfflineAccount.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/offline/OfflineAccount.java
@@ -104,7 +104,8 @@ public class OfflineAccount extends Account {
 
     @Override
     public AuthInfo logIn() throws AuthenticationException {
-        AuthInfo authInfo = new AuthInfo(username, uuid, UUIDTypeAdapter.fromUUID(UUID.randomUUID()), "{}");
+        // Using "legacy" user type here because "mojang" user type may cause "invalid session token" or "disconnected" when connecting to a game server.
+        AuthInfo authInfo = new AuthInfo(username, uuid, UUIDTypeAdapter.fromUUID(UUID.randomUUID()), AuthInfo.USER_TYPE_LEGACY, "{}");
 
         if (loadAuthlibInjector(skin)) {
             CompletableFuture<AuthlibInjectorArtifactInfo> artifactTask = CompletableFuture.supplyAsync(() -> {
@@ -144,7 +145,7 @@ public class OfflineAccount extends Account {
         private YggdrasilServer server;
 
         public OfflineAuthInfo(AuthInfo authInfo, AuthlibInjectorArtifactInfo artifact) {
-            super(authInfo.getUsername(), authInfo.getUUID(), authInfo.getAccessToken(), authInfo.getUserProperties());
+            super(authInfo.getUsername(), authInfo.getUUID(), authInfo.getAccessToken(), USER_TYPE_LEGACY, authInfo.getUserProperties());
 
             this.artifact = artifact;
         }
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/yggdrasil/YggdrasilSession.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/yggdrasil/YggdrasilSession.java
index 6f9854760..f0bf4f8d7 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/yggdrasil/YggdrasilSession.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/yggdrasil/YggdrasilSession.java
@@ -104,7 +104,7 @@ public class YggdrasilSession {
         if (selectedProfile == null)
             throw new IllegalStateException("No character is selected");
 
-        return new AuthInfo(selectedProfile.getName(), selectedProfile.getId(), accessToken,
+        return new AuthInfo(selectedProfile.getName(), selectedProfile.getId(), accessToken, AuthInfo.USER_TYPE_MOJANG,
                 Optional.ofNullable(userProperties)
                         .map(properties -> properties.entrySet().stream()
                                 .collect(Collectors.toMap(Map.Entry::getKey,
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/launch/DefaultLauncher.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/launch/DefaultLauncher.java
index 62da0d165..ce679dbb6 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/launch/DefaultLauncher.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/launch/DefaultLauncher.java
@@ -401,7 +401,7 @@ public class DefaultLauncher extends Launcher {
                 pair("${profile_name}", Optional.ofNullable(options.getProfileName()).orElse("Minecraft")),
                 pair("${version_type}", Optional.ofNullable(options.getVersionType()).orElse(version.getType().getId())),
                 pair("${game_directory}", repository.getRunDirectory(version.getId()).getAbsolutePath()),
-                pair("${user_type}", "mojang"),
+                pair("${user_type}", authInfo.getUserType()),
                 pair("${assets_index_name}", version.getAssetIndex().getId()),
                 pair("${user_properties}", authInfo.getUserProperties()),
                 pair("${resolution_width}", options.getWidth().toString()),