For more information, see Code access security for ClickOnce applications. You can also debug applications with restricted permissions to emulate the end-user experience. Use the Security page in the ProjectDesigner to request the zone appropriate for the application. In most cases, you can choose the Internet or Local Intranet zones to limit the permissions. Code access securityĬode access security helps limit the access that code has to protected resources. For more information, see Trusted application deployment overview. If an application comes from a trusted publisher, it can be installed without any user interaction. Certificates can also be used to configure client computers to have a list of trusted publishers. For more information, see ClickOnce and Authenticode. Optionally, certificates can also be used to sign the application and deployment manifests to prove that the files have not been tampered with. By using Authenticode for application deployment, ClickOnce helps prevent a harmful program from portraying itself as a legitimate program coming from an established, trustworthy source. CertificatesĪuthenticode certificates are used to verify the authenticity of the application's publisher. The core ClickOnce security is based on certificates, code access security policies, and the ClickOnce trust prompt. For more information, see Secure ClickOnce applications. If necessary, the application can request elevated security permissions. ClickOnce applications run in the Internet or Intranet security zones. ClickOnce applications are self-contained each ClickOnce application is installed to and run from a secure per-user, per-application cache. For more information, see Choose a ClickOnce update strategy.īecause ClickOnce applications are isolated, installing or running a ClickOnce application cannot break existing applications. Updates can also be rolled back to an earlier version by the end user or by an administrator. The developer can specify the update behavior a network administrator can also control update strategies, for example, marking an update as mandatory. For more information, see Choose a ClickOnce deployment strategy.ĬlickOnce applications can be self-updating they can check for newer versions as they become available and automatically replace any updated files. A ClickOnce application can be installed on an end user's computer and run locally even when the computer is offline, or it can be run in an online-only mode without permanently installing anything on the end user's computer. You can publish a ClickOnce application in three different ways: from a Web page, from a network file share, or from legacy media such as a CD-ROM. dll) published using ClickOnce technology. By using applications deployed using ClickOnce, you can have the best of both technologies.Ī ClickOnce application is any Windows Presentation Foundation (. In the past, these issues sometimes caused developers to decide to create Web applications instead of Windows-based applications, sacrificing a rich user interface for ease of installation. Windows Installer deployment requires administrative permissions and allows only limited user installation ClickOnce deployment enables non-administrative users to install and grants only those Code Access Security permissions necessary for the application. With Windows Installer deployment, applications often rely on shared components, with the potential for versioning conflicts with ClickOnce deployment, each application is self-contained and cannot interfere with other applications. Only those parts of the application that have changed are downloaded, and then the full, updated application is reinstalled from a new side-by-side folder. With Microsoft Windows Installer deployment, whenever an application is updated, the user can install an update, an msp file, and apply it to the installed product with ClickOnce deployment, you can provide updates automatically. For information about deploying Visual C++ applications, see ClickOnce Deployment for Visual C++ Applications.ĬlickOnce deployment overcomes three major issues in deployment:ĭifficulties in updating applications. Visual Studio provides full support for publishing and updating applications deployed with ClickOnce technology if you have developed your projects with Visual Basic and Visual C#. Applies to: Visual Studio Visual Studio for Mac Visual Studio CodeĬlickOnce is a deployment technology that enables you to create self-updating Windows-based applications that can be installed and run with minimal user interaction.
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