Links of the week (May30-Jun5)

Some of this weeks most interesting articles and news:

HoloLens Software Update

Opening Windows Holographic

HyperDev by Fog Creek

Designing for Virtual Reality

Share Comments

Xbox One Deploy Error

As I was trying to deploy one of my apps to the Xbox One, I ran into a strange error that ate a lot of my time to fix.
I don’t think you’ll be getting in this touble if you start from scratch but considering a lot of the new apps on Xbox will be existing apps, this might apply

The Error

DEP0700 : Registration of the app failed. 
Deployment Register operation with target volume C: on Package xxx_xxx_x86__wr8y21pj9dftj
from: (AppxManifest.xml) failed with error 0x80073CFD.
See for help diagnosing app deployment issues. (0x80073cfd)


  • Make sure package.appxanifest TargetDeviceFamily includes Windows.Xbox or Windows.Universal.

    <TargetDeviceFamily Name="Windows.Xbox" MinVersion="" MaxVersionTested="10.0.10586.0" />
    <TargetDeviceFamily Name="Windows.Universal" MinVersion="" MaxVersionTested="10.0.10586.0" />
  • Fix Visual Assets

    • Scale 200 required. This is the default scale for Xbox and you might not have all your assets if you only targeted small factor screens before.
  • Package Name
    • Some package names would fail to deploy. Could not find a clear pattern but mostly when a ‘.’ is involved it tends to fail. If nothing else works, consider playing with the package name.
Share Comments

Xbox One Developer

As I’ve mentioned in my Build 2016 overview post, this year Microsoft announced they are finally opening the Xbox One for developers to deploy and debug their apps.
So I did a quick test and tried to deploy one of my apps on the Xbox as a quick experiment.

To get started you can read all about it on the official site but here is a quick summary of the most important things I found

  1. Read the fine print before you activate developer mode. Some of the limitations are pretty rough so make sure you are aware of what you’re getting into: some games might not work anymore, you might need to reset your console to leave the developer mode and streaming to a Win 10 machine is not going to work anymore.
  2. You do need a developer account to enable Developer Mode on your console. Within your developer account you can only activate 3 consoles. Once activated, multiple developers can pair to the console and deploy from their Visual Studio
  3. When deploying from Visual Studio, ensure that the authentication mode is set to Universal. The error you get if the mode is incorrect is not the most obvious error so pay attention beforehand.
  4. If by any chance your app is a WinJS app rather than a XAML/C# app, you will need to make some modifications to make it work out of the box. Check out the great TVHelpers library.

I’m really excited at the new possibilities that the Xbox opens and I am looking forward to publishing my first Xbox compatible app soon.

Share Comments

HoloToolkit Framerate display

I’ve been working with the HoloLens for about 6 weeks now (yes, I’ve been one of the lucky Wave 1-Day 1 HoloLensers) and even though I haven’t written anything yet, there’s a lot of stuff I learned about it and I will try to start and put in on “paper” in the following weeks.

Performance Performance Performance

One of the key things in delivering a truly amazing HoloLens experience is performance. Top priority from start to end of the project is to have the application running at 60fps ()
I am not going to write here about the techniques on how to achieve that - you can find all about it on the excellent HoloLens documentation site here and here, but I will present some pointers on how to measure that framerate as easily as possible.

Read More

Share Comments

Tackling the MS 70-355 exam

As my current MCSD - Store Apps (Win 8.1) certification will expire at the end of August I started looking at the next step MCSD - Universal Windows Platform certification.
I quickly passed the first one MS 70-354 but then I got stuck at the second and more difficult one - MS 70-355.

Not only the syllabus for the exam is way more extensive, but the lack of an official study guide makes it hard to study for it.

So I’ve attempted to dissect the skills measured section, broke it down 3 level deep down to the base topic for each chapter, and provide links to documentation for each section (where’ there’s a missing link, I did not find any relevant official documentation on that particular topic. I will update the post as I find them)

Read More

Share Comments

Build 2016 overview

Even though it’s been a month since BUILD ended, the announcements made and their importance still resonates today.

Mobile First Cloud First

First takeaway comes from the first moments of the keynote. It’s defining Microsoft’s strategy with a somewhat cliché motto, but what makes it interesting is the explanation that Satya Nadella gave when talking about it.
In Microsoft’s view, mobile does not represent what we all think it does, it’s not referring to a device or even a category of devices. What it represents is the mobility of the users. It represents the freedom of being anywhere, using device at any time and have all your knowledge, context and information with you. And to make all of this possible you need the cloud which has everything you need and it’s accessible from anywhere you need it. In this light I believe that Microsoft is really close to achieving this vision.

Read More

Share Comments


As I was mentioning the inaugural blog post, I was looking to build a simple but elegant solution to manage my blog, and as I went for the static site generator route, I was left with no “administration” panel to write and publish posts.

While researching my options, I noticed a lot of people were using GitHub to host their sources, and deploying either to GitHub pages or to other hosts via Git hooks. But I wanted to use the infrastructure I already had in place using Visual Studio Team Services to host the code and Azure Websites for hosting.

The process - how does a static site work?

First of all, I had to understand how Hexo works (and pretty much any static site generator for that matter). This wasn’t very hard, you just need to read the readme file of the tool. I’ll lay it out in a few words. First you need to install the tool, usually using npm. Once you have it, you can initialize your blog in a new folder - I’m not going to go into any more details about this, maybe another post. Suffice to say, this folder is now your “source” for the blog. Since the tool has quite a few dependencies, you need to run npm install to ensure they all get deployed in your folder as well. Once you have that, you run a command to generate your site - same as you would compile your sources in any other language. The result of this compilation is a folder that is essentially your entire site - a self-contained website consisting of just a bunch of HTML, CSS, JS and images. The idea is, you take this folders and publish it anywhere and you’re done with it.

The goal

So my goal for the blog deployment was to be able to host my code in Visual Studio Team Sarvices in a Git repository and every time I write something, commit the article and via some magic in the next couple of minutes my Azure Website would show the post. I could commit a new markdown file in the repository from anywhere or any device and it I would get a new post on my blog. No need to worry about compilation, deployment, or anything

Read More

Share Comments

Hexo image hacking

As I just started blogging on the hexo platform I quickly stumbled upon a behavior that was not what I expected.

I wanted to insert an image that links to a different site, but because of the fancybox implementation whenever you clicked the image, it would open the image rather than opening the link as I wanted.

For example, I want to show my StackOverflow flair image and point the link at the profile page:

1. The most basic thing you would try is:


This will render like this:

Obviously not what you’d expect. All right, maybe what you’d expect, but certainly not what we want.

2. Trying to fix our initial mistake, try and render the image in the tag

[![Alex Drenea's Stack Exchange profile](](

Rendering like:

Alex Drenea's Stack Exchange profile

This is close to what we want, but not exactly there. If you click on the image, it just open the fancybox for that image, but I want clicking the image to take me to the destination website instead. I don’t like the caption under the image in this case even though it points to the right link. But I want the image to go to the link. I also don’t like the center alignment.

Read More

Share Comments

Making it happen

The beginning of a new era

It’s been a while since I felt the need for a blog to put down my various thoughts and finds. At the same time, I feel more and more that it’s time to start giving back to the community. Combined with the fact that I’ve been doing some pretty interesting new things at work lately I thought there’s no excuse in putting it off any longer and set up a goal to get it done last weekend.

As you can see in the about page, I am not really an web guy so I knew going in that this will not be easy. But hopefully I made it work and I will be more than happy to hear your feedback and learn from you guys how to make it better.

Read More

Share Comments