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    <p>Generally, .NET application should run the same on any Windows version with .NET framework installed. Most common problem that occur are related to the new User Account Control policy in Vista and 7, which prevents applications from accessing areas requiring elevated privileges (which would otherwise run fine under an Administrator account in XP). </p> <p>For example, if your application is trying to write configuration settings to the <code>Program Files</code> folder (which is a really bad idea, btw), or is using some hardcoded disk or registry paths instead of environment variables provided in .NET classes, it may fail under Vista.</p> <p>To quickly check if this is an UAC privilege problem, try to run the application as an administrator (have your client right click the .exe file and select <strong>Run as Administrator</strong>). If it works, then this suggests that you need to examine your code and update it to make sure you are only accessing allowed areas.</p> <p>Check this link for more information: <a href="http://www.codeproject.com/KB/vista-security/MakingAppsUACAware.aspx" rel="nofollow noreferrer">Making apps UAC aware</a>.</p> <p>As <a href="https://stackoverflow.com/questions/3171887/c-application-is-freezing-on-vista-7-not-on-xp-2003-server/3171901#3171901">redsquare</a> suggested, the best way to test your application in a variety of Windows systems is to run them in several virtual machines (<a href="http://www.microsoft.com/windows/virtual-pc/default.aspx" rel="nofollow noreferrer">MS Virtual PC</a> or <a href="http://www.vmware.com/products/player/" rel="nofollow noreferrer">VMWare Player</a>, both of them free for download).</p>
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    1. POC# application is freezing on vista/7, not on xp/2003 server
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    1. COthis is a good point but I have a windows 7 PC and it seems to run. I suppose I am not covering the area of code my client is covering but it is hard to say. The best would be to have a debugger that could attach to the freezed application to get the stack trace I think.
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    2. COIn house testing can never capture all issues, like the one Pierre faced. Therefore, other approaches must be used. Ask your client to use a debugger can be too hard if he/she is not a developer. Usually a process dump is easier to capture and it provides enough information for troubleshooting.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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