Here is a list of the VRED-specific and external environment variables and explanations and/or values for them in VRED.

Where To Enter Environment Variables (Beginners)

If this is the first time setting an environment variable, here is where to do it on Windows. For Mac, see How to Set an Environment Variable on Mac.

1. Right-click your This PC icon and select Properties.

2. Click Advanced system settings.

3. Click the Advanced tab, then the Environment Variables button.

4. In the System variables section (at the bottom), click New. This open the New System Variable dialog.

5. Enter the environment variable name and a value, then click OK.

VRED-specific Variables

These environment variables are VRED-specific.

VRED-specific Variable	Value/Explanation
VRED_ALLOW_STANDBY_MODE   ADSK_VRED_ALLOW_STANDBY_MODE	Any value: Allows the machine to enter sleep mode. By default, VRED prevents sleep mode.
VRED_CLUSTERMANAGER_PATH	Provides the path to a user-defined storage location for cluster manager data (database, encrypted project files, and images).
VRED_COLLABORATION_NO_AUDIO	Any value: Prevents the use of VRED native audio in Collaboration mode.
VRED_COLLABORATION_NO_UPLOAD	Any value: Prevents the uupload of scenes in Collaboration mode.
VRED_CURRENT_PROJECT _DIR	Read-only: Returns the current directory of loaded VPB file.
VRED_CUSTOM_HANDS	Provides the path to a user-defined directory for custom VR hand geometry.
VRED_DATA	Read-only: Returns the path to the VRED data directory.
VRED_DEBUG_IDLE_LICENSE	Any value: Enables the debug output for License Idle mode.
VRED_DISABLE_ADP	Any value: Disables the Autodesk data collection feature.
VRED_DISABLE_CASCADING	Any value: Disables license cascading.
VRED_DISABLE_CLIC_IPM	Any value: Hides the license UI in VRED.
VRED_DISABLE_CLIC_USER_LICENSE	Any value: Disables the user license feature.
VRED_DISABLE_CUDA_MEMORY_POOL_SUPPORT	0: Use CUDA Memory Pool on supporting devices. Other value: Disables CUDA Memory Pool Support. For enabling this, see VRED_USE_CUSTOM_CUDA_MEMORY_POOL.
VRED_DISABLE_IDLE_LICENSE	Any value: Disables the license release on idle.
VRED_DISABLE_ONLINE_STORES	Any value: Disables the use of online stores in main window. No UI will be shown.
VRED_DISABLE_SHARED_VIEWS	Any value: Disables the shared views feature.
VRED_DISABLE_WEB_ACCESS	Any value: Disables access to web content. It will hide the Community menu and online stores.
VRED_DISABLE_WEBINTERFACE | ADSK_VRED_DISABLE_WEBINTERFACE	Any value: Disables the VRED web interface. No UI will be shown.
VRED_EXAMPLES	Read-only: Returns the path to VRED examples directory.
VRED_FILEIO_TMP_DIR	Provides the path to a user-defined file IO tmp dir for VRED.
VRED_FORCE_EGL	Any value: Forses the use of EGL (https://www.khronos.org/egl/) under Linux.
VRED_IDLE_LICENSE_TIME	Provides the time, in seconds, after which VRED will release the license when on idle. The value is clamped to range [60, 900].
VRED_IGNORE_INVISIBLE	1: Ignores the invisible geometry of non-wire files on import. Other value: Import invisible geometry.
VRED_PREFERENCES_OVERRIDE	Provides a path to a config file (preferences.xml) containing a subset of preferences to overwrite the local preferences for the session upon startup. See Distribute Preferences for use.
VRED_ROOT	Read-only: Returns the path to VRED root directory.
VRED_SCRIPT_PLUGINS	Provides the path to a user-defined directory for script plugins. The subfolder structure of that folder must match the following constraint: Autodesk/VRED-<Version>/ScriptPlugins where <Version> is the number of the VRED release (e.g., 13.0).
VRED_SERVICE_PAGE	0: Completely blocks the web interface. 1: Blocks the web interface http site, but requests are enabled. 2: Completely enables the web interface.
VRED_TMP_DIR	Provides the path to a user-defined tmp directory for VRED.
VRED_TRANSLATION_DIR	Provides the path to a user-defined directory for translations.
VRED_USE_ALL_TRACKING	0 or not set: Uses a specific tracking module, instead of loading all. Other value: Loads all tracking module plugins.
VRED_USE_CUSTOM_CUDA_MEMORY_POOL	Any Value: For disabling this, see VRED_DISABLE_CUDA_MEMORY_POOL_SUPPORT.
VRED_USE_CUSTOM_CUDA_MEMORY_POOL	0: Uses CUDA Default Memory Pool. Other value: Uses a custom CUDA Memory Pool on supporting devices. For disabling this, see VRED_DISABLE_CUDA_MEMORY_POOL_SUPPORT.
VRED_USE_OLD_MATERIAL_SORTING	Any Value: Enables the old sorting algorithm for materials in the Material Editor that was used before VRED 2023
VRED_USE_OLD_TRACKING	1: Ignores the new VRPN tracking module and only loads old tracking module. Other value or not set: Loads the new VRPN tracking module. Requires VRED_USE_ALL_TRACKING = 1 or not set.
VRED_WRITE_IMPORT_DEBUG_FILE	1: Writes the ATF import debug file. Other value: No debug file.
VRED_WRITABLE_DATA	Read-only: Returns the path to VRED writable data directory.
VRED<VersionYear>_SCRIPT_PLUGINS (e.g., VRED2020_2_SCRIPT_PLUGINS)	Provides the path to a user-defined directory for script plugins.
<AppName>_LOG_DIR (e.g., VREDPRO_LOG_DIR)	Provides the path to a user-defined log directory.

External Variables

These environment variables are external.

External Variable	Value/Explanation
ADLSDK_DARK_SITE	In dark site mode, CLIC will avoid sending HTTP requests and disable user license model. This special mode is desired for customers with restricted Internet connectivity. Set to "TRUE" to turn it on (case sensitive), any other value to turn it off.
HDRLS_HOME_V4	Provides the path to HDR LightStudio V4 libraries.
HDRLS_HOME_V5	Provides the path to HDR LightStudio V5 libraries.
MAYA_LOCATION	Provides the path to the Maya location.
STARVR_SDK	Provides the path to the StarVR SDK. This variable should be created in the StarVR SDK installer.

Additional Links

Here are some additional links for working with environment variables:

• For defining a path with an environment variable, see How to Use Environment Variables to Define a Path.
• For setup on a Mac, see How to Set an Environment Variable on Mac.
• For using non-dependent variables, see How to Use Non-dependent Variables.