I received an exit code. What does it mean?

Each package may have unique exit codes which are typically described on each package page.  In general,
100-199 are prerequisite failures
200-299 are installation failures, and
300-399 are validation failures.

ValueDescription
0The package ran successfully
100Unsupported OS version
101Unsupported OS architecture
102Invalid verbosity mode
104Aborting installation; unsafe conditions
105Invalid command line argument
106Unsupported hardware
195Cannot find license file
196Invalid license file
197Invalid license file
198Unauthorized computer or network
199License has expired
200Failed to run the installer
201Failed to extract the answer file
202Failed to cache the package to the local disk
203Failed to extract the installer
280File extraction error: The specified archive file does not exist
281File extraction error: Unable to delete the extraction directory
282File extraction error: Unable to create the extraction directory
283File extraction error: Failed to run the extraction tool
284File extraction error: One or more files were not extracted
285File extraction error: Fatal error
286File extraction error: Command line error
287File extraction error: Not enough memory for operation
288File extraction error: User stopped the process
289File extraction error: Unknown error
3017A restart is required before installing

Microsoft Installer (MSI) exit codes are described below.
Source: http://msdn.microsoft.com/en-us/library/aa376931.aspx

Error codeValueDescription
ERROR_SUCCESS0The action completed successfully.
ERROR_INVALID_DATA13The data is invalid.
ERROR_INVALID_PARAMETER87One of the parameters was invalid.
ERROR_CALL_NOT_IMPLEMENTED120This value is returned when a custom action attempts to call a function that cannot be called from custom actions. The function returns the value ERROR_CALL_NOT_IMPLEMENTED. Available beginning with Windows Installer version 3.0.
ERROR_APPHELP_BLOCK1259If Windows Installer determines a product may be incompatible with the current operating system, it displays a dialog box informing the user and asking whether to try to install anyway. This error code is returned if the user chooses not to try the installation.
ERROR_INSTALL_SERVICE_FAILURE1601The Windows Installer service could not be accessed. Contact your support personnel to verify that the Windows Installer service is properly registered.
ERROR_INSTALL_USEREXIT1602The user cancels installation.
ERROR_INSTALL_FAILURE1603A fatal error occurred during installation.
ERROR_INSTALL_SUSPEND1604Installation suspended, incomplete.
ERROR_UNKNOWN_PRODUCT1605This action is only valid for products that are currently installed.
ERROR_UNKNOWN_FEATURE1606The feature identifier is not registered.
ERROR_UNKNOWN_COMPONENT1607The component identifier is not registered.
ERROR_UNKNOWN_PROPERTY1608This is an unknown property.
ERROR_INVALID_HANDLE_STATE1609The handle is in an invalid state.
ERROR_BAD_CONFIGURATION1610The configuration data for this product is corrupt. Contact your support personnel.
ERROR_INDEX_ABSENT1611The component qualifier not present.
ERROR_INSTALL_SOURCE_ABSENT1612The installation source for this product is not available. Verify that the source exists and that you can access it.
ERROR_INSTALL_PACKAGE_VERSION1613This installation package cannot be installed by the Windows Installer service. You must install a Windows service pack that contains a newer version of the Windows Installer service.
ERROR_PRODUCT_UNINSTALLED1614The product is uninstalled.
ERROR_BAD_QUERY_SYNTAX1615The SQL query syntax is invalid or unsupported.
ERROR_INVALID_FIELD1616The record field does not exist.
ERROR_INSTALL_ALREADY_RUNNING1618Another installation is already in progress. Complete that installation before proceeding with this install.For information about the mutex, see _MSIExecute Mutex.
ERROR_INSTALL_PACKAGE_OPEN_FAILED1619This installation package could not be opened. Verify that the package exists and is accessible, or contact the application vendor to verify that this is a valid Windows Installer package.
ERROR_INSTALL_PACKAGE_INVALID1620This installation package could not be opened. Contact the application vendor to verify that this is a valid Windows Installer package.
ERROR_INSTALL_UI_FAILURE1621There was an error starting the Windows Installer service user interface. Contact your support personnel.
ERROR_INSTALL_LOG_FAILURE1622There was an error opening installation log file. Verify that the specified log file location exists and is writable.
ERROR_INSTALL_LANGUAGE_UNSUPPORTED1623This language of this installation package is not supported by your system.
ERROR_INSTALL_TRANSFORM_FAILURE1624There was an error applying transforms. Verify that the specified transform paths are valid.
ERROR_INSTALL_PACKAGE_REJECTED1625This installation is forbidden by system policy. Contact your system administrator.
ERROR_FUNCTION_NOT_CALLED1626The function could not be executed.
ERROR_FUNCTION_FAILED1627The function failed during execution.
ERROR_INVALID_TABLE1628An invalid or unknown table was specified.
ERROR_DATATYPE_MISMATCH1629The data supplied is the wrong type.
ERROR_UNSUPPORTED_TYPE1630Data of this type is not supported.
ERROR_CREATE_FAILED1631The Windows Installer service failed to start. Contact your support personnel.
ERROR_INSTALL_TEMP_UNWRITABLE1632The Temp folder is either full or inaccessible. Verify that the Temp folder exists and that you can write to it.
ERROR_INSTALL_PLATFORM_UNSUPPORTED1633This installation package is not supported on this platform. Contact your application vendor.
ERROR_INSTALL_NOTUSED1634Component is not used on this machine.
ERROR_PATCH_PACKAGE_OPEN_FAILED1635This patch package could not be opened. Verify that the patch package exists and is accessible, or contact the application vendor to verify that this is a valid Windows Installer patch package.
ERROR_PATCH_PACKAGE_INVALID1636This patch package could not be opened. Contact the application vendor to verify that this is a valid Windows Installer patch package.
ERROR_PATCH_PACKAGE_UNSUPPORTED1637This patch package cannot be processed by the Windows Installer service. You must install a Windows service pack that contains a newer version of the Windows Installer service.
ERROR_PRODUCT_VERSION1638Another version of this product is already installed. Installation of this version cannot continue. To configure or remove the existing version of this product, use Add/Remove Programs in Control Panel.
ERROR_INVALID_COMMAND_LINE1639Invalid command line argument. Consult the Windows Installer SDK for detailed command-line help.
ERROR_INSTALL_REMOTE_DISALLOWED1640The current user is not permitted to perform installations from a client session of a server running the Terminal Server role service.
ERROR_SUCCESS_REBOOT_INITIATED1641The installer has initiated a restart. This message is indicative of a success.
ERROR_PATCH_TARGET_NOT_FOUND1642The installer cannot install the upgrade patch because the program being upgraded may be missing or the upgrade patch updates a different version of the program. Verify that the program to be upgraded exists on your computer and that you have the correct upgrade patch.
ERROR_PATCH_PACKAGE_REJECTED1643The patch package is not permitted by system policy.
ERROR_INSTALL_TRANSFORM_REJECTED1644One or more customizations are not permitted by system policy.
ERROR_INSTALL_REMOTE_PROHIBITED1645Windows Installer does not permit installation from a Remote Desktop Connection.
ERROR_PATCH_REMOVAL_UNSUPPORTED1646The patch package is not a removable patch package. Available beginning with Windows Installer version 3.0.
ERROR_UNKNOWN_PATCH1647The patch is not applied to this product. Available beginning with Windows Installer version 3.0.
ERROR_PATCH_NO_SEQUENCE1648No valid sequence could be found for the set of patches. Available beginning with Windows Installer version 3.0.
ERROR_PATCH_REMOVAL_DISALLOWED1649Patch removal was disallowed by policy. Available beginning with Windows Installer version 3.0.
ERROR_INVALID_PATCH_XML1650The XML patch data is invalid. Available beginning with Windows Installer version 3.0.
ERROR_PATCH_MANAGED_ADVERTISED_PRODUCT1651Administrative user failed to apply patch for a per-user managed or a per-machine application that is in advertise state.
Available beginning with Windows Installer version 3.0.
ERROR_INSTALL_SERVICE_SAFEBOOT1652Windows Installer is not accessible when the computer is in Safe Mode.
Exit Safe Mode and try again or try using System Restore to return your computer to a previous state. Available beginning with Windows Installer version 4.0.
ERROR_ROLLBACK_DISABLED1653Could not perform a multiple-package transaction because rollback has been disabled. Multiple-Package Installations cannot run if rollback is disabled. Available beginning with Windows Installer version 4.5.
ERROR_INSTALL_REJECTED1654The app that you are trying to run is not supported on this version of Windows. A Windows Installer package, patch, or transform that has not been signed by Microsoft cannot be installed on an ARM computer.
ERROR_SUCCESS_REBOOT_REQUIRED3010A restart is required to complete the install. This message is indicative of a success. This does not include installs where the ForceReboot action is run.