I was logged on to the website as a administrator, and clicked extension (just to see what there was behind that button) - and error occored so I clicked back, but then this message appeared -

500 Internal Server Error
The requested Url (http://hsh.as/Default.aspx) does not return any valid content 

And now i cannot open or enter the webpage. How can I solve this problem?

Please help!

Thanks for you answer Sebastian

I don't know how I get 'back' to the web page.
The error from above keeps comming up when I enter the 'web adress'. I don't know if there is another way to get access to the webpage or the admin-site. 
But otherwise I don't know how to get acces to the files.

 

also check out your hosting panel, it might provide an option to restart application or download and upload files (like web.config).

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Cheers from Germany,
Sebastian Leupold

   

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