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Ben
Asked: 2011-06-23 15:51:32 +0800 CST

netsh.exe: Error 87

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I'm having some trouble creating a urlacl reservation in Windows Server 2008; probably this a rookie mistake.

The command line I'm using is:

netsh http add urlacl url=http://+:99898/ user=ben

The error that I see is:

Url reservation add failed, Error: 87
The parameter is incorrect.

There is a local user account named 'ben' that has admin privileges. I've made sure to put a trailing slash after the port number in the URL. Google and MSDN documentation are letting me down now - does anyone have any clue what I'm doing incorrectly?

windows-server-2008 http netsh

3 Answers

  1. I had the same error; in my case, the mistake I was making was omitting the trailing slash from the URL:

    C:\>netsh http add urlacl url=http://+:8085 user=DOMAIN\myname
Url reservation add failed, Error: 87
The parameter is incorrect.


C:\>netsh http add urlacl url=http://+:8085/ user=DOMAIN\myname
URL reservation successfully added
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  2. Best Answer

    Port number "99898" isn't a valid TCP port number. TCP port numbers are 16-bit unsigned integers, so they can't exceed 65535. I would strongly suspect that this invalid port number is the reason for the error you're seeing.

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  3. netsh http add urlacl url=https://*:8081/ user=Everyone

    Also the trailing slash does matter -------------^

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