diff --git a/class/flask_session/sessions.py b/class/flask_session/sessions.py
index 62671197..e15606fd 100644
--- a/class/flask_session/sessions.py
+++ b/class/flask_session/sessions.py
@@ -275,6 +275,7 @@ class MemcachedSessionInterface(SessionInterface):
         httponly = self.get_cookie_httponly(app)
         secure = self.get_cookie_secure(app)
         expires = self.get_expiration_time(app, session)
+        samesite = self.get_cookie_samesite(app)
         if not PY2:
             val = self.serializer.dumps(dict(session), 0)
         else:
@@ -285,9 +286,18 @@ class MemcachedSessionInterface(SessionInterface):
             session_id = self._get_signer(app).sign(want_bytes(session.sid))
         else:
             session_id = session.sid
-        response.set_cookie(app.session_cookie_name, session_id,
+        from BTPanel import request,g
+        if 'auth_error' in g: return
+        if request.path == '/': return
+        if response.status_code not in [200,302]: return
+        if not request.cookies.get(app.session_cookie_name):
+            if request.full_path.find('/login?tmp_token=') == 0:
+                samesite = 'None'
+                secure = True
+            response.set_cookie(app.session_cookie_name, session_id,
                             expires=expires, httponly=httponly,
-                            domain=domain, path=path, secure=secure)
+                            domain=domain, path=path, secure=secure,samesite=samesite)
+
 
 
 class FileSystemSessionInterface(SessionInterface):