I am using BlogEngine.NET for my blog and it was working great for a long time. Suddenly the blog is now giving the following error: HTTP Error 500.0 - Internal Server Error I have not made any changes, and the error suddenly appeared. The blog is a subfolder within a main site (which still works fine). Please help!
Those are rough to troubleshoot. I'd highly recommend enabling the Failed Request Tracing module if you're using IIS7: http://learn.iis.net/page.aspx/266/troubleshooting-failed-requests-using-tracing-in-iis-7/ This allows you to show the real error, because the 500 error is a very generic one which doesn't give you much information.
My disk quota seemed to be full. I increased this and still had the problem. The folders may have been corrupted - I copied them locally and ran from a localhost and it also failed just giving a blank page. I completely deleted the folders and added new folders and it somehow fixed the problem.
