diff --git a/lib/galaxy/visualization/plugins/interactive_environments.py b/lib/galaxy/visualization/plugins/interactive_environments.py
index 26571e31d6c..b7c1016f41c 100644
--- a/lib/galaxy/visualization/plugins/interactive_environments.py
+++ b/lib/galaxy/visualization/plugins/interactive_environments.py
@@ -88,7 +88,7 @@ class InteractiveEnvironmentRequest(object):
             self.attr.proxy_prefix = '/'.join(
                 (
                     '',
-                    (self.attr.galaxy_config.cookie_path or '/').strip('/'),
+                    trans.cookie_path.strip('/'),
                     self.attr.galaxy_config.dynamic_proxy_prefix.strip('/'),
                     self.attr.viz_id,
                 )
diff --git a/lib/galaxy/web/framework/webapp.py b/lib/galaxy/web/framework/webapp.py
index 2ac12204139..f64e0a1d05b 100644
--- a/lib/galaxy/web/framework/webapp.py
+++ b/lib/galaxy/web/framework/webapp.py
@@ -620,12 +620,16 @@ class GalaxyWebTransaction(base.DefaultWebTransaction,
             # self.log_event( "Automatically created account '%s'", user.email )
         return user
 
+    @property
+    def cookie_path(self):
+        return self.app.config.cookie_path or url_for('/')
+
     def __update_session_cookie(self, name='galaxysession'):
         """
         Update the session cookie to match the current session.
         """
         self.set_cookie(self.security.encode_guid(self.galaxy_session.session_key),
-                        name=name, path=self.app.config.cookie_path or url_for('/'))
+                        name=name, path=self.cookie_path)
 
     def check_user_library_import_dir(self, user):
         if getattr(self.app.config, "user_library_import_dir_auto_creation", False):
diff --git a/lib/galaxy/web/proxy/__init__.py b/lib/galaxy/web/proxy/__init__.py
index 94c73335b2c..15805090159 100644
--- a/lib/galaxy/web/proxy/__init__.py
+++ b/lib/galaxy/web/proxy/__init__.py
@@ -13,6 +13,7 @@ from galaxy.util import (
 )
 from galaxy.util.filelock import FileLock
 from galaxy.util.lazy_process import LazyProcess, NoOpLazyProcess
+from galaxy.web.framework import url_for
 
 log = logging.getLogger(__name__)
 
@@ -148,7 +149,7 @@ class GolangProxyLauncher(object):
                 config.dynamic_proxy_bind_port,
             ),
             "--listenPath", "/".join((
-                (config.cookie_path or '/'),
+                (config.cookie_path or url_for('/')),
                 config.dynamic_proxy_prefix
             )),
             "--cookieName", "galaxysession",