Reference - Task Sequece Variables

The primary role of OneSiteDownloader in ConfigMgr is to allow packages referenced by a Task Sequence to be acquired using the OneSite peer-to-peer Alternate Content Provider (ACP) rather than a Distribution Point (DP). The following lists all of the Task Sequence variables that can be used by OneSiteDownloader.

Variable	Description	Values / Example
SSTSDownloadProgram	Should be applied at the start of a task sequence and after each restart. If the path contains spaces (e.g., "Program Files"), wrap it in quotes.	Full path to OneSiteDownloader.exe. Example: %systemdrive%\OneSite\OneSiteDownloaderx64.exe
OneSiteNoFallback	Prevents fallback to a Distribution Point. If set to true, the task sequence fails if OneSiteDownloader cannot download content. Default is to fall back to DP.	true / false
OneSiteRandomize	Randomizes the list of discovered peer sources to improve load balancing. Off by default.	true / false
OneSiteDiscoveryTimeOut	Overrides the default 600‑second timeout for peer discovery.	<number of seconds before timeout>
OneSiteEnforceMax	Forces OneSiteDownloader to continue discovery until 3 sources are found within the subnet.	true / false
OneSiteUsePreferred	Prioritizes preferred sources. If none are in the local subnet, expands discovery into remote subnets until the first preferred source is found.	true / false
OneSiteUseSMSTSLogPath	Writes the OneSiteDownloader.log file to the _SMSTSLogPath folder.	true / false
AdaptivaServerGUIDs	Restricts accepted RVP responses to specific Adaptiva servers. Useful in mixed‑version environments. GUID found in: HKLM\Software\Wow6432Node\Adaptiva\Client client_data_manager.server_guid	<Adaptiva Server GUID>
OneSiteNacDomain, OneSiteNacAccount, OneSiteNacPassword	Provide encrypted domain, username, and password values for using the ConfigMgr Network Access Account. Generated via: OneSiteDownloader.exe –encrypt <NACDomain> <NACUsername> <NACPassword>	Encrypted values output by the tool
OneSiteServerNameOrIP	Used on networks that don't support broadcasts (e.g., Wi‑Fi). OneSiteDownloader directly queries the server for RVPs and uses unicast communication. Also used when no other Adaptiva clients exist in the subnet.	<AdaptivaServerFQDN> or <AdaptivaServerIP>