Webservice throws "empty" exception

I've a webservice which seems to works fine, but sometimes the webservice stop working for no apparent reason. When I check the response in Firebug I see an "empty" exception: "There was an error processing the request"

开发者_如何学编程When the error occurs none of the methods on the webservice is working - even the simplest methods which does nothing else but return some data from the database. What could cause a webservice to completly stop working?

Best regards, Steffen

I'd same problems a few years ago. By using PerfMon I saw that I've to increase the usable memory for the hosting AppPool..

When you're logic is fine, it has to be a configuration problem on your webserver (IIS)