INFO: How long will Rebex support old versions of .NET Framework?


  • Rebex components for specific framework will be supported at least as long as Microsoft supports that framework.
  • Security fixes for Rebex components for specific framework will be released at least as long as Microsoft releases security fixes for that framework.

Rebex Support Lifecycle for various .NET Framework versions

Users of Rebex products get an access to dlls compiled for various .NET Framework versions (*1). This document describes for how long Rebex will continue support the specific framework version.

Rebex components support for specific framework version is synchronized with Microsoft's support for the framework version. Microsoft Main support phase lasts at least 5 years after the release of the .NET Framework version. Microsoft Extended support phase lasts for another 5 years. Read Microsoft Support Lifecycle Policy FAQ for details on Microsoft support phases.

Rebex Main Support phase for specific .NET Framework ends not sooner than Microsoft's Main Support phase. The Rebex Extended Support phase ends not sooner that Microsoft's Extended Support phase.

Following table summarizes support provided in the specific phases

Rebex support phases
Support provided Mainstream support phase Extended support phase
Security fixes (*6) For every customer For every customer
Non-security fixes Customers with support contract Customers with support contract, upon request
Trial packages For everyone -

Microsoft Framework support timeline

Version General Availability Date Support retired Extended support retired Latest Rebex component build
.NET 1.0 2002-04-15 2007-07-10 2009-07-14 build 3723 released on 2010-03-11
.NET 1.1 2003-07-10 2008-10-14 2013-10-08 build 3723 released on 2010-03-11
.NET 2.0, 3.0 and 3.5 (*2) 2006-02-17 2011-04-11 2016-04-11 current
.NET 3.5 SP1 (*3) 2008-08-11 2015-01-13 2020-01-14 current
.NET 4.0 (*3) 2010-06-29 2015-07-14 2020-08-09 current
.NET 4.5 (*3) 2012-10-30 2018-01-09 2023-01-10 current
.NET 4.6 (*3) 2015-07-29 2020-10-13 2025-10-14 current
.NET CF 1.0 2003-07-10 2008-10-14 2013-10-08 build 3723 released on 2010-03-11
.NET CF 2.0 2005-10-31 2011-01-14 2016-04-12 current (with legacy platform support)
.NET CF 3.5 (*4) 2008-02-19 2014-12-31 2019-12-31 current
.NET CF 3.9 (*5) 2013-08-11 2018-10-09 2023-10-10 current


*1) Not all Rebex products are available for all framework versions. If the product for specific framework version is released it will be supported according to this document. However the release of component for specific framework is not guaranteed.

*2) .NET 3.0 and .NET 3.5 depends on .NET 2.0 CLR. Dates are based on Microsoft support phases for .NET 3.5 Framework.

*3) Beginning with .NET 3.5 SP1, .NET Framework is considered a component of the Windows OS. Components follow the Support Lifecycle policy of their parent product or platform.

*4) Original .NET CF 3.5 support expiration date was 2013-04-09. When .NET CF 3.5 was added to Windows Embedded Handheld 6.5, the mainstream support expiration date changed to December 2014.

*5) .NET CF 3.9 is part of Windows Embedded Compact 2013.

*6) Security fixes are provided only for critical security vulnerabilitoes in Rebex code. However, this does not apply to vulnerabilities caused by weaknesses in protocols or algorithms themselves or in third party code.