diff --git a/apps/web/src/components/Sidebar.tsx b/apps/web/src/components/Sidebar.tsx
index af8255a272dd29d0bc12bf2f523f1976972829c1..0e700369eba863cde71b66ad421337df9df42675 100644
--- a/apps/web/src/components/Sidebar.tsx
+++ b/apps/web/src/components/Sidebar.tsx
@@ -525,15 +525,29 @@ export default function Sidebar() {
         });
         await handleNewThread(projectId).catch(() => undefined);
       } catch (error) {
+        const description =
+          error instanceof Error ? error.message : "An error occurred while adding the project.";
         setIsAddingProject(false);
-        setAddProjectError(
-          error instanceof Error ? error.message : "An error occurred while adding the project.",
-        );
+        if (shouldBrowseForProjectImmediately) {
+          toastManager.add({
+            type: "error",
+            title: "Failed to add project",
+            description,
+          });
+        } else {
+          setAddProjectError(description);
+        }
         return;
       }
       finishAddingProject();
     },
-    [focusMostRecentThreadForProject, handleNewThread, isAddingProject, projects],
+    [
+      focusMostRecentThreadForProject,
+      handleNewThread,
+      isAddingProject,
+      projects,
+      shouldBrowseForProjectImmediately,
+    ],
   );
 
   const handleAddProject = () => {