--- title: Release Notes - .NET FIX Engine - Version 2.84.0.0 description: Release Notes - .NET FIX Engine - Version 2.84.0.0 --- [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 FIX Engine - Version 2.84.0.0 - [Home](https://www.onixs.biz) - [Release Notes](https://www.onixs.biz/release-notes/) 24 May 2012 ## Bug - [[DOTNET-526](http://support.onixs.biz/browse/DOTNET-526)] - Session initialization hangs when zero messages specified to store ## Improvement - [[DOTNET-506](http://support.onixs.biz/browse/DOTNET-506)] - Nanosecond timestamps should be used in the FixEngineLog.txt file - [[DOTNET-510](http://support.onixs.biz/browse/DOTNET-510)] - Sequence number management should be enabled only for disconnected sessions - [[DOTNET-512](http://support.onixs.biz/browse/DOTNET-512)] - Session.ListenPort property should return actual port number for multiple listening port configuration - [[DOTNET-516](http://support.onixs.biz/browse/DOTNET-516)] - It should be OK to Dispose() Session after FIX Engine's shutdown ### Related articles [See all release notes](https://www.onixs.biz/release-notes/) 11 Nov 2024 ##### [ Release Notes - .NET Framework FIX Engine - Version 4.12.0.0 ](https://www.onixs.biz/release-notes/release-notes-net-framework-fix-engine-version-4-12-0-0.html) 30 May 2024 ##### [ Release Notes - .NET Framework FIX Engine - Version 4.11.0.0 ](https://www.onixs.biz/release-notes/release-notes-net-framework-fix-engine-version-4-11-0-0.html) 23 Jan 2024 ##### [ Release Notes - .NET Framework FIX Engine - Version 4.10.1.0 ](https://www.onixs.biz/release-notes/release-notes-net-framework-fix-engine-version-4-10-1-0.html) 28 Dec 2023 ##### [ Release Notes - .NET Framework FIX Engine - Version 4.10.0.0 ](https://www.onixs.biz/release-notes/release-notes-net-framework-fix-engine-version-4-10-0-0.html) 19 Jul 2023 ##### [ Release Notes - FIX Engine .NET Framework - Version 4.9.0.0 ](https://www.onixs.biz/release-notes/release-notes-fix-engine-net-framework-version-4-9-0-0.html-3) ### 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. 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