Common Issues with 32-bit Applications Failing on 64-bit

In most cases, 32-bit applications execute with no issues on 64-bit thanks to WOW64. However, there are a few cases that you may need to make modifications to your application in order for it to work on 64-bit.  I’ll cover the common issues and possible solutions in this post. 64-bit OS Basics Issue Solution 32-bit…

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Tales of Application Compatibility Weirdness – Demystifying UAC Virtualization

We had a customer in the lab recently and they were quite certain their application was Windows 7 ready. To their surprise, it had several issues in certain situations.  In this post, I’ll talk about one of the situations they encountered as well as other stumbling blocks you might run into with UAC Virtualization. Why…

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Answers to Several Application Manifest Mysteries and Questions

Recently, someone asked me this question in e-mail — “How do I get my application to run elevated when someone launches it?”   Instinctively, I responded with a “You need to manifest it.”  I got a nice long e-mail in return. 😉 I quickly realized that application manifests appear simple but are quite confusing. Manifests are…

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Questions from the Developer Booth at TechEd Europe 2009

I had the opportunity to go to Berlin for TechEd Europe 2009.  I delivered a presentation on Application Compatibility and the rest of the time I hung out in the “Test your app on Win 7” and “Win 7 Developer drop in center”. I got some great questions from attendees.  I thought I’d blog some…

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Windows 7 Application Compatibility Testing Guidance document

If you have an existing application, you may be wondering if it’s going to work on Windows 7.  If it works on Vista, you have a good shot at it working on Windows 7. As a developer or a tester, you may be wondering if you have tested your application to uncover potential issues on…

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Displaying the UAC consent dialog on the desktop

I had written a draft of this post a while ago (last year).  I use Live Writer as my blog editor.  Between Live Writer and Intellimirror,this draft has survived multiple reloads of interim builds of Windows 7.  So, I think in some ways, it deserves to be resurrected and posted. :-)  Here’s the post with…

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Developing Compatible Applications for Windows 7 webcast

I know I could talk all day about application compatibility topics and not cover everything that can be discussed.  Here’s a one hour webcast  I did that focuses on the top issues and most confusing topics for Application Compatibility.  I do some of my favorite demos showing UAC architecture, data redirection, services isolation, and mandatory…

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