Running old ASP app on Windows 7 - 401.3 unauthorized problem

There's a great article here about how to run and debug that 'classic' ASP site of yours, if you happen to have one. However, if you make just the steps from article, you'll probably end up with "HTTP Error 401.3 - Unauthorized" error. The solution is simple and found on serverfault - you just have to grant the IUSR user at least a Read&Execute access to your website's folder. Just like that:

Hope I saved you some googling.