500.19 error with IIS7.5

Question

I am getting the following error, even after I unlock my website. Any reasons?

HTTP Error 500.19 - Internal Server Error The requested page cannot be accessed becaus

Answer 1

I got this message after sharing my folder with a coworker. The folder had a lock on it (in Windows explorer). I had to release the lock (by granting a permission to all authenticated users, for further instructions view https://www.howtogeek.com/howto/17117/remove-the-lock-icon-from-a-folder-in-windows-7/). Once the lock has been removed, the error disappeared.