Same as HTTP status 503 - the service is temporarily overloaded.
Same as HTTP status 503 - the request was timed out waiting for a gateway.
Same as HTTP status 505 - the server does not support the HTTP protocol version used for the request.
Operation failed due to a changed file location; refresh internal state and resend.
Operation failed because Windows Update Agent does not support registration with a non-WSUS server.
The server returned an empty authentication information list.
Windows Update Agent was unable to create any valid authentication cookies.
A configuration property value was wrong.
A configuration property value was missing.
The HTTP request could not be completed and the reason did not correspond to any of the WU_E_PT_HTTP_* error codes.
Same as ERROR_WINHTTP_NAME_NOT_RESOLVED - the proxy server or target server name cannot be resolved.
Windows Update Agent failed to download a redirector cabinet file with a new redirectorId value from the server during the recovery.
A redirector recovery action did not complete because the server is managed.
External cab file processing completed with some errors.
The external cab processor initialization did not complete.
The format of a metadata file was invalid.
External cab processor found invalid metadata.
The file digest could not be extracted from an external cab file.
An external cab file could not be decompressed.
External cab processor was unable to get file locations.
A communication error not covered by another WU_E_PT_* error code.
The redirector XML document could not be loaded into the DOM class.
The redirector XML document is missing some required information.
The redirectorId in the downloaded redirector cab is less than in the cached cab.
The redirector failed for reasons not covered by another WU_E_REDIRECTOR_* error code.
A driver was skipped.
A property for the driver could not be found. It may not conform with required specifications.
The registry type read for the driver does not match the expected type.
The driver update is missing metadata.
The driver update is missing a required attribute.
Driver synchronization failed.
Information required for the synchronization of applicable printers is missing.
A driver error not covered by another WU_E_DRV_* code.
An operation failed because Windows Update Agent is shutting down.
An operation failed because the data store was in use.
The current and expected states of the data store do not match.
The data store is missing a table.
The data store contains a table with unexpected columns.
A table could not be opened because the table is not in the data store.
The current and expected versions of the data store do not match.
The information requested is not in the data store.
The data store is missing required information or has a NULL in a table column that requires a non-null value.
The data store is missing required information or has a reference to missing license terms, file, localized property or linked row.
The update was not processed because its update handler could not be recognized.
The update was not deleted because it is still referenced by one or more services.
The data store section could not be locked within the allotted time.
The category was not added because it contains no parent categories and is not a top-level category itself.
The row was not added because an existing row has the same primary key.
The data store could not be initialized because it was locked by another process.
The data store is not allowed to be registered with COM in the current process.
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