- Local App Access requirements
- Provide access to local applications
- Feature interaction with Microsoft Windows versions
- Enable Local App Access on client machines running Receiver
- Use URL Redirection to launch local applications
In XenDesktop, hosted desktop sessions use URL redirection to launch Local Access applications. URL redirection makes the application available under more than one URL address. It launches a local browser (based on your browser's URL blacklist) by clicking embedded links within a browser in a desktop session. If you navigate to a URL that is not present in the blacklist, the URL is opened in the desktop session again.
In addition to URL redirection, you can also use File Type Association (FTA) redirection. FTA launches local applications when a file is encountered in the session. If the local app is launched, it must have access to the file to open it. Therefore, you can only open files that reside on network shares or on client drives (using CDM) using local apps.
For example, when opening the file \\client\C:\users\<username>\desktop\hugefile.pdf, if a PDF reader is a local app, then the file opens using that PDF reader. Because the local app can access the file directly, there is no network transfer of the file through ICA to open this file.
URL Redirection provides URL matching functionality and based on a predefined list, the URL is selectively launched on the endpoint or the VDA browser. Use URL redirection for end users with a virtual desktop as their primary work spaces.
To specify the redirection path of content from specific Web sites, configure the URL Whitelist and URL Blacklist on the Delivery Agent. These lists consist of multi-string registry keys that specify the policy for URL redirection as described in Local App Access policy settings.
Although all the URLs can be rendered on the VDA itself, there are some exceptions:
By default, URL redirection is disabled on user devices when you install Receiver. You can enable it on the command line during installation. To do so, you must:
This installs and registers the necessary browser add-ons, and also enables necessary client lockdown settings for enabling LAA, including the URL redirection feature.
For example, to register IE add-ons on Receiver, enter:
C:\Program Files\Citrix\ICA Client\redirector.exe/regIE
Register IE add-ons on Desktop OS VDA (Windows 7 or Windows 8):
C:\Program Files\Citrix\ICAService\VDARedirector.exe /regIE
Register IE add-ons on a Server OS VDA (Windows Server 2008 R2 or Windows Server 2012):
C:\Program Files (x86)\Citrix\System32\VDARedirector.exe/regIE
By default, Internet Explorer redirects the URL entered. If the URL is not in the blacklist but is redirected to another URL by browser or website, the final URL is not redirected even if it is present in the blacklist.
For URL redirection to work correctly, enable the add-on when prompted by the browser. If the add-ons using internet options or the add-ons in the prompt are disabled, URL redirection does not work correctly.
Firefox add-ons always redirect the URLs.
When an add-on is installed by a user or with an installer, Firefox prompts you to allow/stop the add-on installation in new tab page. You must allow the add-on for the feature to work.
Chrome add-on always redirects the final URL that is navigated and not entered URLs.
The extensions have been installed externally. If you disable the extension, the URL redirection feature does not work in Chrome. If the URL redirection is required in Incognito mode, allow the extension to run in InCongnito mode by selecting this option.