MIP SDK cannot read file labels if a message was encrypted by Outlook Classic.
C++ application uses MIP SDK version 1.14.108. The application does Office files decryption and labels reading. The problem with labels reading is observed. Steps to reproduce: Create a docx file with a label which does not impose encryption. Open Outlook Classic, compose email, attach the document from 1, click Encrypt, send. During message sending our application intercepts encrypted by Outlook docx file in temporary folder C:\Users\UserName\AppData\Local\Temp Application decrypts the intercepted file using mipns::FileHandler::RemoveProtection. Visual inspection demonstrates that decryption runs successfully. Then a separate FileHandler for decrypted file is created, and mipns::FileHandler::GetLabel() returns an empty label. It means that the label was lost during decryption. Upon visual inspection of the decrypted file via Word we can see that the label is missing. Also, we do not see MSIP_Label* entries in meta data (File -> Info -> Properties -> Advanced Properties -> Custom). Here is a fragment of MIP SDK reducted log during file handler creation ================= file_engine_impl.cpp:327 "Creating file handler for: [D:\GitRepos\ ...reducted]" mipns::FileEngineImpl::CreateFileHandlerImpl gsf_utils.cpp:50 "Initialized GSF" `anonymous-namespace'::InitGsfHelper data_spaces.cpp:415 "No LabelInfo stream was found. No v1 custom properties" mipns::DataSpaces::GetLabelInfoStream data_spaces.cpp:428 "No LabelInfo stream was found. No v1 custom properties" mipns::DataSpaces::GetXmlPropertiesV1 file_format_base.cpp:155 "Getting protection from input..." mipns::FileFormatBase::GetProtection license_parser.cpp:233 "XPath returned no results" `anonymous-namespace'::GetXmlNodesFromPath license_parser.cpp:233 "XPath returned no results" `anonymous-namespace'::GetXmlNodesFromPath license_parser.cpp:299 "GetAppDataNode - Failed to get ID in PL app data section, parsing failed" `anonymous-namespace'::GetAppDataNode api_log_cache.cpp:58 "{{============== API CACHED LOGS BEGIN ============}}" mipns::ApiLogCache::LogAllMessages file_engine_impl.cpp:305 "Starting API call: file_create_file_handler_async scenarioId=89fd6484-7db7-4f68-8cf7-132f87825a26" mipns::FileEngineImpl::CreateFileHandlerAsync 37948 default_task_dispatcher_delegate.cpp:83 "Executing task 'ApiObserver-0' on a new detached thread" mipns::DefaultTaskDispatcherDelegate::ExecuteTaskOnIndependentThread 37948 file_engine_impl.cpp:305 "Ended API call: file_create_file_handler_async" mipns::FileEngineImpl::CreateFileHandlerAsync 37948 file_engine_impl.cpp:305 "Starting API task: file_create_file_handler_async scenarioId=89fd6484-7db7-4f68-8cf7-132f87825a26" mipns::FileEngineImpl::CreateFileHandlerAsync file_engine_impl.cpp:327 "Creating file handler for: [D:\GitRepos\...reducted....docx]" mipns::FileEngineImpl::CreateFileHandlerImpl file_format_factory_impl.cpp:88 "Create File Format. Extension: [.docx]" mipns::FileFormatFactoryImpl::Create file_format_base.cpp:363 "V1 metadata is not supported for file extension .docx. Setting metadata version to 0" mipns::FileFormatBase::CalculateMetadataVersion compound_file.cpp:183 "Open compound file for read" mipns::CompoundFile::OpenRead gsf_utils.cpp:50 "Initialized GSF" `anonymous-namespace'::InitGsfHelper compound_file_storage_impl.cpp:351 "Get Metadata" mipns::CompoundFileStorageImpl::GetMetadata compound_file_storage_impl.cpp:356 "No Metadata, not creating GSF object" mipns::CompoundFileStorageImpl::GetMetadata metadata.cpp:119 "Create Metadata" mipns::Metadata::Metadata metadata.cpp:136 "Got [0] properties from DocumentSummaryInformation" mipns::Metadata::GetProperties compound_file_storage_impl.cpp:351 "Get Metadata" mipns::CompoundFileStorageImpl::GetMetadata compound_file_storage_impl.cpp:356 "No Metadata, not creating GSF object" mipns::CompoundFileStorageImpl::GetMetadata metadata.cpp:119 "Create Metadata" mipns::Metadata::Metadata metadata.cpp:136 "Got [0] properties from DocumentSummaryInformation" mipns::Metadata::GetProperties =================