| Variable | Description |
|---|---|
| _BrowseProperty | Links various controls used for folder browsing |
| ACTION | Default installation action |
| ADDDEFAULT | Features to install in their default state |
| ADDLOCAL | Features to install locally |
| ADDSOURCE | Features to install as run from source |
| AdminProperties | Administrative install properties |
| ADVERTISE | Features to advertise |
| AFTERREBOOT | Installer resumed after reboot |
| ALLUSERS | User privilege level for installation |
| ARPNOMODIFY | Disable Add/Remove Programs Modify |
| ARPNOREMOVE | Disable Add/Remove Programs Remove |
| ARPNOREPAIR | Disable Add/Remove Programs Repair |
| ARPSYSTEMCOMPONENT | Hide product in Add/Remove Programs |
| AVAILABLEFREEREG | Available registry space |
| CCP_DRIVE | Disk drive to search by RMCCPSearch action |
| CCP_SUCCESS | Set to 1 if CCPSearch or RMCCPSearch found matching signature |
| CCP_TEST | Controls CCPSearch and RMCCPSearch actions |
| COMPADDLOCAL | Component GUIDS to install locally |
| COMPADDSOURCE | Component GUIDS to install as run from source |
| CostingComplete | Costing is complete |
| DISABLEADVTSHORTCUTS | Disable advertising shortcuts |
| DISABLEMEDIA | Disable source media registration |
| DISABLEROLLBACK | Disable rollbacks |
| EnableUserControl | Allow public properties elevated privileges install |
| EXECUTEACTION | Top-level installer action |
| EXECUTEMODE | Installer execution mode |
| FASTOEM | Improve installation speed under certain circumstances |
| FILEADDDEFAULT | Files to install in their default configuration |
| FILEADDLOCAL | Files to install locally |
| FILEADDSOURCE | Files to install as run from source |
| FileInUseProcess | List of processes holding in-use files |
| INSTALLLEVEL | Installation level for feature installation |
| IsAdminPackage | Running from an administrative package |
| LOGACTION | Actions for whom to log action data |
| MEDIAPACKAGEPATH | Non-root path of installation source |
| MediaSourceDir | Installation source is disk media |
| MSICHECKCRCS | Perform CRC file checks |
| MsiHiddenProperties | Properties that should not be logged |
| MSINODISABLEMEDIA | Prevent DISABLEMEDIA |
| NOCOMPANYNAME | Suppress COMPANYNAME property |
| NOUSERNAME | Suppress USERNAME property |
| OriginalDatabase | Original installation database path |
| OutOfDiskSpace | Insufficient disk space for installation |
| OutOfNoRbDiskSpace | Insufficient disk space even without rollback |
| PackageCode | Distribution package GUID |
| ParentOriginalDatabase | Parent's installation database path |
| ParentProductCode | Parent's product code |
| PATCH | Patches applied |
| PATCHNEWPACKAGECODE | New package code for patch |
| PATCHNEWSUMMARYCOMMENTS | New summary comments for patch |
| PATCHNEWSUMMARYSUBJECT | New summary subject for patch |
| Preselected | Features have already been selected |
| PRIMARYFOLDER | Name of the primary installation folder symbol |
| PrimaryVolumePath | Volume containing the primary installation folder |
| PrimaryVolumeSpaceAvailable | Available disk space on primary installation volume |
| PrimaryVolumeSpaceRemaining | Remaining disk space on primary installation volume |
| PrimaryVolumeSpaceRequired | Required disk space on primary installation volume |
| PROMPTROLLBACKCOST | Action if insufficient rollback space is available |
| REBOOT | Reboot policy |
| REBOOTPROMPT | Perform silent reboot |
| REINSTALL | Features to reinstall |
| REINSTALLMODE | Reinstallation mode |
| REMOVE | Features to remove |
| ReplacedInUseFiles | In-use files were replaced |
| RestrictedUserControl | Restrict public properties |
| RESUME | Installer resumed after suspension |
| RollbackDisabled | Rollback is disabled |
| ROOTDRIVE | Default disk drive for installation |
| SecureCustomProperties | Properties safe for installation with elevated privileges |
| SEQUENCE | Name of SEQUENCE action target sequence |
| SHORTFILENAMES | Use short file names during installation |
| SOURCELIST | Package source locations |
| TARGETDIR | Root folder for installation |
| TRANSFORMS | Transforms to apply |
| TRANSFORMSATSOURCE | Transforms are at the source root |
| TRANSFORMSSECURE | Cache transforms read-only |
| UpdateStarted | Installation process has started |
| UPGRADINGPRODUCTCODE | Uninstaller runs as part of upgrade |
| VersionMsi | MSI version number |