Be sure to disable friendly http errors when developing web applications.

These "friendly" errors can mask a problem when troubleshooting. This is prevalent in ASP applications. The following app is missing a virtual directory, and the client has friendly errors turned on:
That doesn't really tell you much, does it? Now here's what we get with the option turned off:
That's a little more informative (minus the proprietary details), isn't it? Keep it unfriendly!

These "friendly" errors can mask a problem when troubleshooting. This is prevalent in ASP applications. The following app is missing a virtual directory, and the client has friendly errors turned on:
That doesn't really tell you much, does it? Now here's what we get with the option turned off:
That's a little more informative (minus the proprietary details), isn't it? Keep it unfriendly!

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