diff --git a/internal/handler/document.go b/internal/handler/document.go
index b641661902..98d2a1af3d 100644
--- a/internal/handler/document.go
+++ b/internal/handler/document.go
@@ -1347,7 +1347,7 @@ func (h *DocumentHandler) Ingest(c *gin.Context) {
 
 	userID := strings.TrimSpace(user.ID)
 	if userID == "" {
-		common.ResponseWithCodeData(c, common.CodeAuthenticationError, nil, "No Authentication")
+		common.ResponseWithCodeData(c, common.CodeAuthenticationError, nil, "no authentication")
 		return
 	}
 
diff --git a/internal/handler/user.go b/internal/handler/user.go
index 223b41f7e0..cec77c6693 100644
--- a/internal/handler/user.go
+++ b/internal/handler/user.go
@@ -451,7 +451,7 @@ func (h *UserHandler) ChangePassword(c *gin.Context) {
 // @Tags users
 // @Success 200 {object} map[string]interface{}
 // @Router /v1/user/login/channels [get]
-func (h *UserHandler) GetLoginChannels(c *gin.Context) {
+func (h *UserHandler) GetLoginChannelsDeprecated(c *gin.Context) {
 	channels, code, err := h.userService.GetLoginChannels()
 	if err != nil {
 		common.ResponseWithCodeData(c, code, []interface{}{}, "Load channels failure, error: "+err.Error())
diff --git a/internal/handler/user_auth.go b/internal/handler/user_auth.go
index 2027339514..fbbfca6d5c 100644
--- a/internal/handler/user_auth.go
+++ b/internal/handler/user_auth.go
@@ -52,7 +52,7 @@ const oauthAuthCookie = "ragflow_auth"
 // @Tags users
 // @Param channel path string true "channel name"
 // @Router /api/v1/auth/login/{channel} [get]
-func (h *UserHandler) OAuthLogin(c *gin.Context) {
+func (h *UserHandler) OAuthLoginDeprecated(c *gin.Context) {
 	channel := c.Param("channel")
 	if channel == "" {
 		common.ResponseWithHttpCodeData(c, http.StatusBadRequest, common.CodeArgumentError, nil, "channel is required")
@@ -89,7 +89,7 @@ func (h *UserHandler) OAuthLogin(c *gin.Context) {
 // @Param code query string true "authorization code"
 // @Param state query string true "state token"
 // @Router /api/v1/auth/oauth/{channel}/callback [get]
-func (h *UserHandler) OAuthChannelCallback(c *gin.Context) {
+func (h *UserHandler) OAuthChannelCallbackDeprecated(c *gin.Context) {
 	channel := c.Param("channel")
 	// An empty channel segment (/auth/oauth//callback) is a malformed path,
 	// not a real channel. Python's router never matches it and returns 404;
diff --git a/internal/handler/user_auth_ee.go b/internal/handler/user_auth_ee.go
index 9b3e207d17..0657aa7f06 100644
--- a/internal/handler/user_auth_ee.go
+++ b/internal/handler/user_auth_ee.go
@@ -65,3 +65,15 @@ func (h *UserHandler) IsAdmin(c *gin.Context) {
 func (h *UserHandler) GetMeta(c *gin.Context) {
 	common.ErrorWithCode(c, common.CodeNotImplemented, "GetMeta not implemented")
 }
+
+func (h *UserHandler) OAuthLogin(c *gin.Context) {
+	common.ErrorWithCode(c, common.CodeNotImplemented, "OAuthLogin not implemented")
+}
+
+func (h *UserHandler) OAuthChannelCallback(c *gin.Context) {
+	common.ErrorWithCode(c, common.CodeNotImplemented, "OAuthChannelCallback not implemented")
+}
+
+func (h *UserHandler) GetLoginChannels(c *gin.Context) {
+	common.SuccessWithData(c, []interface{}{}, "success")
+}
diff --git a/internal/router/router.go b/internal/router/router.go
index 6d1d4f4b68..d6c46440da 100644
--- a/internal/router/router.go
+++ b/internal/router/router.go
@@ -175,19 +175,9 @@ func (r *Router) Setup(engine *gin.Engine) {
 		// searchbots
 		apiNoAuth.GET("/searchbots/detail", r.searchBotHandler.SearchBotDetail)
 
-		// User login channels endpoint
-		apiNoAuth.GET("/auth/login/channels", r.userHandler.GetLoginChannels)
-
 		// User login by email endpoint
 		apiNoAuth.POST("/auth/login", r.userHandler.LoginByEmail)
 
-		// OAuth / OIDC login routes. The static "channels" segment is
-		// registered before the wildcard, so gin's tree resolves
-		// /auth/login/channels to GetLoginChannels and other values to
-		// OAuthLogin without conflict.
-		apiNoAuth.GET("/auth/login/:channel", r.userHandler.OAuthLogin)
-		apiNoAuth.GET("/auth/oauth/:channel/callback", r.userHandler.OAuthChannelCallback)
-
 		// Register
 		apiNoAuth.POST("/users", r.userHandler.Register)
 
diff --git a/internal/router/router_ee.go b/internal/router/router_ee.go
index 7105e192ce..be0c771017 100644
--- a/internal/router/router_ee.go
+++ b/internal/router/router_ee.go
@@ -25,6 +25,9 @@ func SetupEERouter(engine *gin.Engine) {
 
 func RegisterEENoAuthRouter(apiNoAuth *gin.RouterGroup, r *Router) {
 	// For EE
+	apiNoAuth.GET("/auth/login/channels", r.userHandler.GetLoginChannels)
+	apiNoAuth.GET("/auth/login/:channel", r.userHandler.OAuthLogin)
+	apiNoAuth.GET("/auth/oauth/:channel/callback", r.userHandler.OAuthChannelCallback)
 	apiNoAuth.GET("/auth/oauth/callback", r.userHandler.OAuthCallback)
 	apiNoAuth.GET("/auth/oauth/github/callback", r.userHandler.GitHubAuthCallback)
 	apiNoAuth.GET("/auth/oauth/lark/callback", r.userHandler.LarkAuthCallback)