diff --git a/app/Http/Middleware/DatabaseLookup.php b/app/Http/Middleware/DatabaseLookup.php
new file mode 100644
index 000000000000..6aecf60d7edb
--- /dev/null
+++ b/app/Http/Middleware/DatabaseLookup.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Illuminate\Http\Request;
+use Closure;
+
+class DatabaseLookup
+{
+    public function handle(Request $request, Closure $next)
+    {
+        if (env('MULTI_DB_ENABLED') && ! session('SESSION_DB_SERVER')) {
+            return redirect('/logout');
+        }
+
+        return $next($request);
+    }
+}