Chapter 10: Creating Customized Virtual ApplicationsCreating Citrix ProfilesAdminStudio 9.5 User Guide ADS-0950-UG00 959Modifying Profile Registry SettingsUsing the Citrix Assistant, you can add, delete, or modify the registry settings in your Citrix profile.You can also override the Citrix default isolation options for selected registry keys. Isolation options specify how theisolation environment will provide access to system resources requested by the application.Information about modifying profile registry settings on the Profile Registry page includes the following topics:• About the Windows Registry• Adding or Deleting Registry Keys and Values• Setting App-V Application Registry Isolation OptionsAbout the Windows RegistryThe Windows registry is a system-wide database that contains configuration information used by applications andthe operating system. The registry stores all kinds of information, including the following:• Application information such as company name, product name, and version number• Path information that enables your application to run• Uninstallation information that enables end users to uninstall the application easily without interfering withother applications on the system• System-wide file associations for documents created by an application• License information• Default settings for application options such as window positionsKeys, Value Names, and ValuesThe registry consists of a set of keys arranged hierarchically under the My Computer explorer. Just under MyComputer are several root keys. An installation can add keys and values to any root key of the registry. The rootkeys that are typically affected by installations are:• HKEY_LOCAL_MACHINE• HKEY_USERS• HKEY_CURRENT_USER• HKEY_CLASSES_ROOTA key is a named location in the registry. A key can contain a subkey, a value name and value pair, and a default(unnamed) value. A value name and value pair is a two-part data structure under a key. The value name identifies avalue for storage under a key, and the value is the actual data associated with a value name. When a value name isunspecified for a value, that value is the default value for that key. Each key can have only one default (unnamed)value.Note that the terms key and subkey are relative. In the registry, a key that is below another key can be referred to asa subkey or as a key, depending on how you want to refer to it relative to another key in the registry hierarchy.
