Another Cause of the “No Usable Certificate(s) 0x103 Error

One of the most mysterious errors you’ll see when working with DirectAccess are related to failures in IP-HTTPS connectivity. I did a blog post on this problem last year and you can find it at http://blogs.technet.com/b/tomshinder/archive/2010/03/30/troubleshooting-the-no-usable-certificate-s-ip-https-client-error.aspx Phillip Sand clued me into another possible cause of IP-HTTPS connectivity problems. First, whenever you suspect a problem with…

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Answers to UAG SP1 DirectAccess Contest 1–Round 2/Quiz 4and Contest 2 Round 1/Quiz 4

This is the big day! The results are in for the last quiz in Contest 1. First, I’ll go over the questions and answers and explain some interesting things that came up when I reviewed the answers I received, which had the effect of leading to two correct answers for one of the questions. At…

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UAG SP1 DirectAccess Contest 1–Round 2/Quiz 4 (Final) and Contest 2 Round 1/Quiz 4

Wow! This is it – the last quiz in Contest 1. That’s right – this is quiz 4 of the second round. To celebrate this occasion and to make things more interesting, we’re going to have FIVE questions. This will give those who are behind a better chance of catching up and put some pressure…

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Answers to UAG SP1 DirectAccess Contest 1–Round 2/Quiz 3 and Contest 2 Round 1/Quiz 3

Now for the moment you’ve all been waiting for – the answers to UAG SP1 DirectAccess Contest 1–Round 2/Quiz 2 and Contest 2 Round 1/Quiz 2! Last week’s quiz was a bit different with some practical problem solving scenarios based on screenshots. Let’s see how you did: =========================================== Question 1: Review the information in figure…

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UAG SP1 DirectAccess Contest 1–Round 2/Quiz 3 and Contest 2 Round 1/Quiz 3

It’s time for your weekly UAG DirectAccess quiz! We’re getting close to the end of contest 1, so make sure you don’t miss a step for the next two weeks. Last week’s quiz was definitely tricky and introduced some obscure or difficult to find information. This week I’m going to try something a little different….

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Why Do I Need Two IP Addresses on the External Interface of the UAG DirectAccess Server?

This question comes up frequently when introducing admins to UAG DirectAccess. It makes sense, since public IPv4 addresses are getting more difficult to come by and in fact it’s predicted that there will be an exhaustion of the entire IPv4 address space by next month. So, why do you need two public IP addresses on…

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Some 3G Connections May Not Enable DirectAccess Always-On Connectivity

DirectAccess is about being “always-on”. When I start my laptop in the morning, I’m ready to get to work. Even though I don’t work on the Microsoft campus, I’m able to connect to anything I want (that I have permissions to connect to) on the Microsoft intranet without thinking about connecting to an SSL VPN…

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Answers to UAG SP1 DirectAccess Contest 1–Round 2/Quiz 2 and Contest 2 Round 1/Quiz 2

Now for the moment you’ve all been waiting for – the answers to UAG SP1 DirectAccess Contest 1–Round 2/Quiz 2 and Contest 2 Round 1/Quiz 2! Here you go: =========================================== Question 1: ISATAP is an IPv6 transition technology that enables computers to tunnel IPv6 packets inside an IPv4 header. Which of the following scenarios are…

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UAG SP1 DirectAccess Contest 1–Round 2/Quiz 2 and Contest 2 Round 1/Quiz 2

(If you didn’t participate in Quiz 1 – you can read the rules of the game over at http://blogs.technet.com/b/tomshinder/archive/2010/12/02/uag-sp1-directaccess-contest-quiz-one-round-one.aspx) It’s time for Contest 1-Round 2/Quiz 2 and Contest 2-Round 1/Quiz 2 Send your entries until 11AM Central Standard Time (-0600 UTC) on Monday January 17th. The scores are really close and at this point, anyone…

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Answers to UAG SP1 DirectAccess Contest 1–Round 2/Quiz 1 and Contest 2 Round 1/Quiz 1

Now for the moment you’ve all been waiting for – the answers to UAG SP1 DirectAccess Contest 1–Round 2/Quiz 1 and Contest 2 Round 1/Quiz 1! Here you go: ========================================================== Answer to Question 1: When the DirectAccess client connects to the UAG DirectAccess server, it establishes two IPsec tunnels – the infrastructure tunnel and the…

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