--- title: Release Notes - .NET CME FIX/FAST Market Data Handler - Version 2.13.0.0 description: Release Notes - .NET CME FIX/FAST Market Data Handler - Version 2.13.0.0 --- [OnixS ](https://www.onixs.biz/) - [Products](https://www.onixs.biz/products.html) - [Support](https://www.onixs.biz/support.html) - [Contact us](https://www.onixs.biz/contact-us) Search Menu # Release Notes - .NET CME FIX/FAST Market Data Handler - Version 2.13.0.0 - [Home](https://www.onixs.biz) - [Release Notes](https://www.onixs.biz/release-notes/) 8 Apr 2013 ## Improvement - [[NETCMEFAST-188](http://support.onixs.biz/browse/NETCMEFAST-188)] - 'environment' and 'updated' attributes from the config.xml file shoud be logged with Info level - [[NETCMEFAST-216](http://support.onixs.biz/browse/NETCMEFAST-216)] - Product name should be changed to '.NET/C# CME FIX/FAST Market Data Handler'. - [[NETCMEFAST-265](http://support.onixs.biz/browse/NETCMEFAST-265)] - Sample app enhancements - [[NETCMEFAST-274](http://support.onixs.biz/browse/NETCMEFAST-274)] - BestBidAskTrackingOptions should be renamed to BestBidOfferTrackingOptions - [[NETCMEFAST-275](http://support.onixs.biz/browse/NETCMEFAST-275)] - Log "Unsupported incremental message (MsgType=R)" at verbose level. - [[NETCMEFAST-277](http://support.onixs.biz/browse/NETCMEFAST-277)] - Prevent handler from running two Instrument feeds simultaneously. ## New Feature - [[NETCMEFAST-259](http://support.onixs.biz/browse/NETCMEFAST-259)] - Accessing Security Definition from IOrderBook ### Related articles [See all release notes](https://www.onixs.biz/release-notes/) 22 Jul 2026 ##### [ Release Notes - CME Drop Copy Java - Version 4.14.0 ](https://www.onixs.biz/release-notes/release-notes-cme-drop-copy-java-version-4-14-0.html) 14 Jul 2026 ##### [ Release Notes - CME MDP Premium Market Data Handler C++ - Version 5.10.3 ](https://www.onixs.biz/release-notes/release-notes-cme-mdp-premium-market-data-handler-c-version-5-10-3.html) 9 Jul 2026 ##### [ Release Notes - CME MDP Premium Market Data Handler C++ - Version 5.10.2 ](https://www.onixs.biz/release-notes/release-notes-cme-mdp-premium-market-data-handler-c-version-5-10-2.html) 8 Jul 2026 ##### [ Release Notes - CME MDP Premium Market Data Handler C++ - Version 5.10.1 ](https://www.onixs.biz/release-notes/release-notes-cme-mdp-premium-market-data-handler-c-version-5-10-1.html) 2 Jul 2026 ##### [ Release Notes - CME STP Handler .NET - Version 4.5.0 ](https://www.onixs.biz/release-notes/release-notes-cme-stp-handler-net-version-4-5-0.html) ### Other recent articles [See all release notes](https://www.onixs.biz/release-notes/) 8 Jul 2026 ##### [Release Notes - CME MDP Premium Market Data Handler C++ - Version 5.10.1 ](https://www.onixs.biz/release-notes/release-notes-cme-mdp-premium-market-data-handler-c-version-5-10-1.html) 9 Jul 2026 ##### [Release Notes - CME MDP Premium Market Data Handler C++ - Version 5.10.2 ](https://www.onixs.biz/release-notes/release-notes-cme-mdp-premium-market-data-handler-c-version-5-10-2.html) 9 Jul 2026 ##### [Release Notes - Euronext Optiq MDG Market Data Handler - Version 1.5.0 ](https://www.onixs.biz/release-notes/release-notes-euronext-optiq-mdg-market-data-handler-version-1-5-0.html) 14 Jul 2026 ##### [Release Notes - CME MDP Premium Market Data Handler C++ - Version 5.10.3 ](https://www.onixs.biz/release-notes/release-notes-cme-mdp-premium-market-data-handler-c-version-5-10-3.html) 22 Jul 2026 ##### [Release Notes - CME Drop Copy Java - Version 4.14.0 ](https://www.onixs.biz/release-notes/release-notes-cme-drop-copy-java-version-4-14-0.html) - Follow OnixS - [Follow us on Twitter ](https://twitter.com/onixsbiz) - [Connect with us on LinkedIn ](https://www.linkedin.com/company/onix-solutions/) [OnixS ](https://www.onixs.biz/) - [Follow us on Twitter ](https://twitter.com/onixsbiz) - [Connect with us on LinkedIn ](https://www.linkedin.com/company/onix-solutions/) ###### Telephone UK [ +44 20 7117 0111 ](tel:+44-20-7117-0111) ###### Telephone US [ +1 312 999 6040 ](tel:+1-312-999-6040) ###### Sales Support [ sales@onixs.biz ](mailto:sales@onixs.biz) ###### Technical Support [ support@onixs.biz ](mailto:support@onixs.biz) [ Support ](https://www.onixs.biz/support.html) - [Products](https://www.onixs.biz/products.html) - [OnixS directConnect](https://www.onixs.biz/directconnect.html) - [FIX Engine](https://www.onixs.biz/fix-engine.html) - [FIX Protocol Tools](https://www.onixs.biz/fix-protocol-dictionary-tools.html) - [About OnixS](https://www.onixs.biz/about.html) - [Insights](https://www.onixs.biz/insights) - [Contact us](https://www.onixs.biz/contact-us) - [Privacy](https://www.onixs.biz/cookies-and-privacy.html) - [Sitemap](https://www.onixs.biz/sitemap.html) Copyright © 2026 OnixS. All Rights Reserved. We track how people interact with our online web content and resources, and some of that tracking involves storing cookies on your device. By continuing to use our site you accept that you agree to this. For more details see our [Cookie usage, and Data Privacy and Protection Policies](https://www.onixs.biz/cookies-and-privacy.html). [Ok](https://www.onixs.biz/release-notes/release-notes-net-cme-fix-fast-market-data-handler-version-2-13-0-0.html#) [OnixS ](https://www.onixs.biz/) Menu - Products - [Products Overview](https://www.onixs.biz/products.html) - [directConnect](https://www.onixs.biz/directconnect.html) - [directConnect SDKs](https://www.onixs.biz/directconnect.html) - [Bloomberg TSOX](https://www.onixs.biz/bloomberg-tsox.html) - [Cboe CFE](https://www.onixs.biz/cboe.html) - [Cboe EU](https://www.onixs.biz/cboe-europe.html) - [CME Globex](https://www.onixs.biz/cme.html) - [CME BrokerTec](https://www.onixs.biz/cme-brokertec.html) - [CME EBS](https://www.onixs.biz/cme-ebs.html) - [Deutsche Börse RRH](https://www.onixs.biz/deutsche-borse-regulatory-reporting-hub-fix.html) - [ICE (Intercontinental Exchange)](https://www.onixs.biz/ice-exchange.html) - [LME (London Metals Exchange)](https://www.onixs.biz/lme.html) - [LSE (London Stock Exchange)](https://www.onixs.biz/lse.html) - [MTS Markets](https://www.onixs.biz/mts.html) - [Nasdaq NFI](https://www.onixs.biz/nasdaq-nfi.html) - [Nodal Exchange](https://www.onixs.biz/nodal-exchange-fix-trade-capture.html) - [TRADEcho](https://www.onixs.biz/tradecho.html) - [TT® 7x FIX](https://www.onixs.biz/tt-7x.html) - [TT® Platform](https://www.onixs.biz/tt.html) - [Turquoise](https://www.onixs.biz/turquoise-dropcopy.html) - [FIX Engine](https://www.onixs.biz/fix-engine.html) - [FIX Engine SDKs](https://www.onixs.biz/fix-engine.html) - [.NET Core/.NET FIX Engine](https://www.onixs.biz/net-fix-engine.html) - [.NET Framework / C# FIX Engine](https://www.onixs.biz/net-framework-fix-engine.html) - [C++ FIX Engine](https://www.onixs.biz/cpp-fix-engine.html) - [Java FIX Engine](https://www.onixs.biz/java-fix-engine.html) - [FIX FAST Decoder and Encoder](https://www.onixs.biz/fix-fast-decoder-encoder.html) - [FIX <-> FIXML Converter](https://www.onixs.biz/fix-fixml-converter.html) - [FIX Protocol Reference & Tools](https://www.onixs.biz/fix-protocol-dictionary-tools.html) - [Reference & Tools Overview](https://www.onixs.biz/fix-protocol-dictionary-tools.html) - [SBE Decoder and Encoder](https://www.onixs.biz/sbe-decoder-encoder.html) - [FIX Protocol Overview](https://www.onixs.biz/fix-protocol.html) - [FIXP Overview](https://www.onixs.biz/fixp.html) - [FIX Dictionary](https://www.onixs.biz/fix-dictionary.html) - [FIX Analyser](https://www.onixs.biz/fix-analyser.html) - [About OnixS](https://www.onixs.biz/about.html) - [Insights](https://www.onixs.biz/insights) - [Contact us](https://www.onixs.biz/contact-us) --- - [Support](https://www.onixs.biz/support.html) --- - [Privacy](https://www.onixs.biz/cookies-and-privacy.html) - [Sitemap](https://www.onixs.biz/sitemap.html) [OnixS ](https://www.onixs.biz/) Close Search ### Search the site Search