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Error 503 Using WCF Service

I have a standalone WCF service listening on port 80. When I try to connect to it, I get 503 Service Unavailable.

My WCF process is running, IIS is running. My ACL urls are correct. Control never reaches my WCF process.

WCF trace shows no more than:

Listen at 'http://localhost/Foo/Bar/'.

Nothing appears in Failed Request Tracing, which is enabled correctly - another trace appears. The message 503 Service Unavailableis completely simple, implying that it comes from kernel mode, not user mode.

I turned on HTTP.SYS tracing , which shows that the namespace is reserved correctly:

Attempted to add URL (http://localhost:80/Foo/Bar/) to URL
group (0xFD0000014000002E). Status: 0x0.

But later, in the same trace, I see:

Request (request ID 0xF600000580000006) rejected
due to reason: UrlGroupLookupFailed.

iisreset , . ; .

? ?

URL (, "Foo" "Fizz" ), . -.

, , https://localhost/Foo/Bar/, , , .

WCF

Nancy, , , ServiceStack .

+5
1

. ACL. ACL, .

http://+:80/Foo/, http://+:80/Foo/Bar/ http://localhost:80/Foo/Bar/. , "localhost", .

- , - reset, ...

+8

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