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Hey folks,We recently encountered numerous questions regarding UAC elevation in vuialo.net.dế yêu. This thread was written khổng lồ address some of these common questions.Let me start off by saying that UAC elevation is a Windows Installer feature. By selecting either UAC elevation option in vuialo.netle, you are really passing the values down khổng lồ the installer manifest which is stored in the setup.exe cộ tệp tin.A little bit about User Account Control (UAC) - its a technology and security infrastructure introduced with Microsoft"s Windows Vista and Windows Server 2008 operating systems (and a more "relaxed" version also present in Windows 7 & Windows Server 2008 R2) . It aims khổng lồ improve the security of Microsoft Windows by limiting application software to lớn standard user privileges until an administrator authorizes an increase or elevation. In this way, only applications trusted by the user may receive administrative sầu privileges, and malware should be kept from compromising the operating system. In other words, a user account may have sầu administrator privileges assigned lớn it, but applications that the user runs vày not inherit those privileges unless they are approved beforeh& or the user explicitly authorizes it.Taking this into trương mục, there are three options for UAC elevation as far as Windows Installer is concerned:asInvoker (Never Elevate) - The application runs with the same access token as the parent process (Windows Explorer if you clicked on the installer in Windows Explorer). This option is recommended for standard user applications. Put simply, this option means vì not show the UAC dialog even if the installer was run by an admin. This way, the cài đặt is forced to lớn run without any privileges.highestAvailable (Elevate Administrators Only) - The application runs with the highest privileges the current user can obtain. Recommended for mixed-mode applications. Put simply, this option means show the UAC dialog only if the installer was run by an admin. If the installer wasn"t run by an admin, the installer wont bother even showing the UAC dialog.requireAdministrator (Always Elevate) - The application runs only for administrators and requires that the application be launched with the full access token of an administrator. Recommended for administrator only applications. Put simply, this option means always show the UAC dialog, forcing non-admin users khổng lồ "find" an admin that can elevate for them. This option guarantees maximum privileges for the installer.Please note that further manipulation of the UAC elevation status is also available at runtime using the Run Program As command. For example, you might want to lớn run your installer with the highestAvailable UAC elevation, but run an external executable within it with de-elevated privileges. This might be, for example, because you want to lớn limit that application"s privileges. Another example would be lớn make sure that documents or other files from an elevated application don"t end up in elevated folders, but in standard user folders.To de-elevate a program run from an elevated thiết đặt, check the "Run under limited user trương mục when UAC is enabled và thiết lập is elevated (de-elevation)" checkbox in the Run Program As comm& dialog:
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runprogramas.png (28.58 KiB) Viewed 42030 timesYou could also run program "as an administrator" from a non-elevated installer at runtime by using the Run Program As comm& & providing a user name & password for an elevated-credentials user. That being said, its important khổng lồ rethành viên that although you can automatically de-elevate an elevated thiết đặt (in the manner explained above), you cannot bởi vì it the other way around. In other words, if a thiết đặt is not run elevated, calling Run Program As with admin credentials will cause the UAC dialog khổng lồ be shown!Aviv Giladivuialo.net.dế yêu SoftwareWhite Papers (HowTos) - http://www.vuialo.net/publication ... papers.htmProduct Guides - http://www.vuialo.net/publication ... guides.htmvuialo.net Help -F1 anywhere in the vuialo.net IDETopStevePosts: 116Joined: Fri Jun 16, 2006 9:51 pmLocation: Canadomain authority eh
Re: UAC Elevation Clarification
Postby Steve » Thu Jun 16, 2011 3:12 pm
Aviv,Thank you very, very much!This is an excellent post và immediately clarifies the confusion I had around the choice of UAC elevation options within vuialo.net.điện thoại.I hope that this will be added verbatim to the IA Help file!Thanks again,-SteveTopgiavivPosts: 2039Joined: Fri Dec 17, 2010 1:39 pmRe: UAC Elevation Clarification
Postby giaviv » Thu Jun 16, 2011 3:42 pm
Postby shenjige » Wed Aug 03, 2011 1:40 pm
How bởi vì you load this "Run Program As" window khổng lồ tichồng off the "Run under limited user trương mục when UAC is enabled and setup is elevated (de-elevation)" checkbox? I couldn"t find out anywhere lớn load this window.TopStevePosts: 116Joined: Fri Jun 16, 2006 9:51 pmLocation: Canada ehRe: UAC Elevation Clarification
Postby Steve » Wed Aug 03, 2011 2:08 pm
Shenjige,You need lớn be in the MSICode window...On the right hvà side of the MSICode screen is the "Drag & Drop" column of commands categories.Locate & expvà the "All" category, then locate "Run Program As" from the danh sách.Drag and Drop "Run Program As" inlớn your the appropriate place in your code where you want the action lớn occur.TopshenjigePosts: 16Joined: Wed Dec 15, 2010 7:29 pmRe: UAC Elevation Clarification
Postby shenjige » Wed Aug 03, 2011 2:45 pm
