diff --git a/vendor/magento/module-company/Plugin/Checkout/Controller/Index/IndexPlugin.php b/vendor/magento/module-company/Plugin/Checkout/Controller/Index/IndexPlugin.php
index 98c1cb41e4b0..c12ef88b9213 100644
--- a/vendor/magento/module-company/Plugin/Checkout/Controller/Index/IndexPlugin.php
+++ b/vendor/magento/module-company/Plugin/Checkout/Controller/Index/IndexPlugin.php
@@ -38,14 +38,14 @@ class IndexPlugin
     private $request;
 
     /**
-     * @var \Magento\Company\Api\AuthorizationInterface
+     * @var \Magento\Company\Model\CompanyUserPermission
      */
-    private $authorization;
+    private $companyUserPermission;
 
     /**
-     * @var \Magento\Company\Model\CompanyUserPermission
+     * @var \Magento\Customer\Model\Session
      */
-    private $companyUserPermission;
+    private $customerSession;
 
     /**
      * @param \Magento\Authorization\Model\UserContextInterface $userContext
@@ -53,8 +53,8 @@ class IndexPlugin
      * @param \Magento\Company\Model\Customer\PermissionInterface $permission
      * @param \Magento\Framework\Controller\Result\RedirectFactory $resultRedirectFactory
      * @param \Magento\Framework\App\RequestInterface $request
-     * @param \Magento\Company\Api\AuthorizationInterface $authorization
      * @param \Magento\Company\Model\CompanyUserPermission $companyUserPermission
+     * @param \Magento\Customer\Model\Session $customerSession
      */
     public function __construct(
         \Magento\Authorization\Model\UserContextInterface $userContext,
@@ -62,16 +62,16 @@ public function __construct(
         \Magento\Company\Model\Customer\PermissionInterface $permission,
         \Magento\Framework\Controller\Result\RedirectFactory $resultRedirectFactory,
         \Magento\Framework\App\RequestInterface $request,
-        \Magento\Company\Api\AuthorizationInterface $authorization,
-        \Magento\Company\Model\CompanyUserPermission $companyUserPermission
+        \Magento\Company\Model\CompanyUserPermission $companyUserPermission,
+        \Magento\Customer\Model\Session $customerSession
     ) {
         $this->userContext = $userContext;
         $this->customerRepository = $customerRepository;
         $this->permission = $permission;
         $this->resultRedirectFactory = $resultRedirectFactory;
         $this->request = $request;
-        $this->authorization = $authorization;
         $this->companyUserPermission = $companyUserPermission;
+        $this->customerSession = $customerSession;
     }
 
     /**
@@ -90,6 +90,9 @@ public function aroundExecute(
     ) {
         $customerId = $this->userContext->getUserId();
         if ($customerId) {
+            if (!$this->customerSession->isLoggedIn()) {
+                return $this->resultRedirectFactory->create()->setPath('customer/account/login');
+            }
             $customer = $this->customerRepository->getById($customerId);
             $isNegotiableQuoteActive = (bool) $this->request->getParam('negotiableQuoteId');
             if (!$this->permission->isCheckoutAllowed($customer, $isNegotiableQuoteActive)) {