Possible reasons why Windows Update Failed to Install

Here are the possible error codes you will encounter in Windows operating system. Most of this error are very common, and usually appear during the first time you install the Windows update on the computer. Possible solution links above, and below this post.

Error codes that the Component Based Servicing (CBS) interface methods return

0xf0801 CBS_S_BUSY operation is still in progress
0xf0802 CBS_S_ALREADY_EXISTS source already exists, now copy not added
0xf0803 CBS_S_STACK_SHUTDOWN_REQUIRED servicing stack updated, aborting
0xf0800 CBS_E_INTERNAL_ERROR Reserved error (|); there is no message for this error
0xf0801 CBS_E_NOT_INITIALIZED session not initialized
0xf0802 CBS_E_ALREADY_INITIALIZED session already initialized
0xf0803 CBS_E_INVALID_PARAMETER invalid method argument
0xf0804CBS_E_OPEN_FAILED the update could not be found or could not be opened
0xf0805CBS_E_INVALID_PACKAGE the update package was not a valid CSI update
0xf0806CBS_E_PENDING the operation could not be complete due to locked resources
0xf0807 CBS_E_NOT_INSTALLABLE the component referenced is not separately installable
0xf0808 CBS_E_IMAGE_NOT_ACCESSIBLE the image location specified could not be accessed
0xf0809 CBS_E_ARRAY_ELEMENT_MISSING attempt to get non-existent array element
0xf080A CBS_E_REESTABLISH_SESSION session object updated, must recreate session
0xf080B CBS_E_PROPERTY_NOT_AVAILABLE requested property is not supported
0xf080C CBS_E_UNKNOWN_UPDATE named update not present in package
0xf080D CBS_E_MANIFEST_INVALID_ITEM invalid attribute or element name encountered
0xf080E CBS_E_MANIFEST_VALIDATION_DUPLICATE_ATTRIBUTES multiple attributes have the same name
0xf080F CBS_E_MANIFEST_VALIDATION_DUPLICATE_ELEMENT multiple elements have the same name
0xf0811 CBS_E_MANIFEST_VALIDATION_MISSING_REQUIRED_ELEMENTS required attributes are missing
0xf0812 CBS_E_MANIFEST_VALIDATION_UPDATES_PARENT_MISSING required attributes are missing
0xf0813 CBS_E_INVALID_INSTALL_STATE install state value not acceptable
0xf0814 CBS_E_INVALID_CONFIG_VALUE invalid setting configuration value
0xf0815 CBS_E_INVALID_CARDINALITY invalid cardinality
0xf0816 CBS_E_DPX_JOB_STATE_SAVED job state for DPX has been saved
0xf0817 CBS_E_PACKAGE_DELETED package was uninstalled and is no longer accessible
0xf0818 CBS_E_IDENTITY_MISMATCH container package points to a package manifest whose identity doesn't match the identity specified
0xf0819CBS_E_DUPLICATE_UPDATENAME update name is duplicated in package.
0xf081A CBS_E_INVALID_DRIVER_OPERATION_KEY the driver operations key is corrupt or invalid
0xf081B CBS_E_UNEXPECTED_PROCESSOR_ARCHITECTURE the processor architecture specified is not supported
0xf081C CBS_E_EXCESSIVE_EVALUATION Watchlist: not able to reach steady state after too many attempts.
0xf081D CBS_E_CYCLE_EVALUATION Watchlist: cycle appears when planning component intended state.
0xf081E CBS_E_NOT_APPLICABLE the package is not applicable
0xf081F CBS_E_SOURCE_MISSING source for package or file not found, ResolveSource() unsuccessful
0xf0820 CBS_E_CANCEL user cancel, IDCANCEL returned by ICbsUIHandler method except Error()
0xf0821 CBS_E_ABORT client abort, IDABORT returned by ICbsUIHandler method except Error()
0xf0822 CBS_E_ILLEGAL_COMPONENT_UPDATE Component update without specifying <updateComponent> in package manifest.
0xf0823 CBS_E_NEW_SERVICING_STACK_REQUIRED Package needs a newer version of the servicing stack.
0xf0824 CBS_E_SOURCE_NOT_IN_LIST Package source not in list.
0xf0825 CBS_E_CANNOT_UNINSTALL Package cannot be uninstalled.
0xf0826 CBS_E_PENDING_VICTIM Package failed to install because another pended package failed.
0xf0827 CBS_E_STACK_SHUTDOWN_REQUIRED servicing stack updated, aborting
0xf0900 CBS_E_XML_PARSER_FAILURE unexpected internal XML parser error.
0xf0901 CBS_E_MANIFEST_VALIDATION_MULTIPLE_UPDATE_COMPONENT_ON_SAME_FAMILY_NOT_ALLOWED In a given package, only one <updateComponent> Is allowed for a component family.

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Windows Update success codes

0x80240001 WU_E_NO_SERVICE Windows Update Agent was unable to provide the service.
0x80240002 WU_E_MAX_CAPACITY_REACHED The maximum capacity of the service was exceeded.
0x80240003 WU_E_UNKNOWN_ID An ID cannot be found.
0x80240004 WU_E_NOT_INITIALIZED The object could not be initialized.
0x80240005 WU_E_RANGEOVERLAP The update handler requested a byte range overlapping a previously requested range.
0x80240006 WU_E_TOOMANYRANGES The requested number of byte ranges exceeds the maximum number (2^31 - 1).
0x80240007 WU_E_INVALIDINDEX The index to a collection was invalid.
0x80240008 WU_E_ITEMNOTFOUND The key for the item queried could not be found.
0x80240009 WU_E_OPERATIONINPROGRESS Another conflicting operation was in progress. Some operations such as installation cannot be performed twice simultaneously.
0x8024000A WU_E_COULDNOTCANCEL Cancellation of the operation was not allowed.
0x8024000B WU_E_CALL_CANCELLED Operation was cancelled.
0x8024000C WU_E_NOOP No operation was required.
0x8024000D WU_E_XML_MISSINGDATA Windows Update Agent could not find required information in the update's XML data.
0x8024000E WU_E_XML_INVALID Windows Update Agent found invalid information in the update's XML data.
0x8024000F WU_E_CYCLE_DETECTED Circular update relationships were detected in the metadata.
0x80240010 WU_E_TOO_DEEP_RELATION Update relationships too deep to evaluate were evaluated.
0x80240011 WU_E_INVALID_RELATIONSHIP An invalid update relationship was detected.
0x80240012 WU_E_REG_VALUE_INVALID An invalid registry value was read.
0x80240013 WU_E_DUPLICATE_ITEM Operation tried to add a duplicate item to a list.
0x80240016 WU_E_INSTALL_NOT_ALLOWED Operation tried to install while another installation was in progress or the system was pending a mandatory restart.
0x80240017 WU_E_NOT_APPLICABLE Operation was not performed because there are no applicable updates.
0x80240018 WU_E_NO_USERTOKEN Operation failed because a required user token is missing.
0x80240019 WU_E_EXCLUSIVE_INSTALL_CONFLICT An exclusive update cannot be installed with other updates at the same time.
0x8024001A WU_E_POLICY_NOT_SET A policy value was not set.
0x8024001B WU_E_SELFUPDATE_IN_PROGRESS The operation could not be performed because the Windows Update Agent is self-updating.
0x8024001D WU_E_INVALID_UPDATE An update contains invalid metadata.
0x8024001E WU_E_SERVICE_STOP Operation did not complete because the service or system was being shut down.
0x8024001F WU_E_NO_CONNECTION Operation did not complete because the network connection was unavailable.
0x80240020 WU_E_NO_INTERACTIVE_USER Operation did not complete because there is no logged-on interactive user.
0x80240021 WU_E_TIME_OUT Operation did not complete because it timed out.
0x80240022 WU_E_ALL_UPDATES_FAILED Operation failed for all the updates.
0x80240023 WU_E_EULAS_DECLINED The license terms for all updates were declined.
0x80240024 WU_E_NO_UPDATE There are no updates.
0x80240025 WU_E_USER_ACCESS_DISABLED Group Policy settings prevented access to Windows Update.
0x80240026 WU_E_INVALID_UPDATE_TYPE The type of update is invalid.
0x80240027 WU_E_URL_TOO_LONG The URL exceeded the maximum length.
0x80240028 WU_E_UNINSTALL_NOT_ALLOWED The update could not be uninstalled because the request did not originate from a WSUS server.
0x80240029 WU_E_INVALID_PRODUCT_LICENSE Search may have missed some updates before there is an unlicensed application on the system.
0x8024002A WU_E_MISSING_HANDLER A component required to detect applicable updates was missing.
0x8024002B WU_E_LEGACYSERVER An operation did not complete because it requires a newer version of server.
0x8024002C WU_E_BIN_SOURCE_ABSENT A delta-compressed update could not be installed because it required the source.
0x8024002D WU_E_SOURCE_ABSENT A full-file update could not be installed because it required the source.
0x8024002E WU_E_WU_DISABLED Access to an unmanaged server is not allowed.
0x8024002F WU_E_CALL_CANCELLED_BY_POLICY Operation did not complete because the DisableWindowsUpdateAccess policy was set.
0x80240030 WU_E_INVALID_PROXY_SERVER The format of the proxy list was invalid.
0x80240031 WU_E_INVALID_FILE The file is in the wrong format.
0x80240032 WU_E_INVALID_CRITERIA The search criteria string was invalid.
0x80240033 WU_E_EULA_UNAVAILABLE License terms could not be downloaded.
0x80240034 WU_E_DOWNLOAD_FAILED Update failed to download.
0x80240035 WU_E_UPDATE_NOT_PROCESSED The update was not processed.
0x80240036 WU_E_INVALID_OPERATION The object's current state did not allow the operation.
0x80240037 WU_E_NOT_SUPPORTED The functionality for the operation is not supported.
0x80240038 WU_E_WINHTTP_INVALID_FILE The downloaded file has an unexpected content type.
0x80240039 WU_E_TOO_MANY_RESYNC Agent is asked by server to resync too many times.
0x80240040 WU_E_NO_SERVER_CORE_SUPPORT WUA API method does not run on Server Core installation.
0x80240041 WU_E_SYSPREP_IN_PROGRESS Service is not available while sysprep is running.
0x80240042 WU_E_UNKNOWN_SERVICE The update service is no longer registered with AU.
0x80240FFF WU_E_UNEXPECTED An operation failed due to reasons not covered by another error code.

Windows Installer minor errors

0x80241001 WU_E_MSI_WRONG_VERSION Search may have missed some updates because the Windows Installer is less than version 3.1.
0x80241002 WU_E_MSI_NOT_CONFIGURED Search may have missed some updates because the Windows Installer is not configured.
0x80241003 WU_E_MSP_DISABLED Search may have missed some updates because policy has disabled Windows Installer patching.
0x80241004 WU_E_MSI_WRONG_APP_CONTEXT An update could not be applied because the application is installed per-user.
0x80241FFF WU_E_MSP_UNEXPECTED Search may have missed some updates because there was a failure of the Windows Installer.

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