.NET Core refers to several technologies including .NET Core, ASP.NET Core and Entity Framework Core.
Looking for the support policy for another part of the .NET platform? See .NET Support Policy.
Every Microsoft product has a lifecycle. The lifecycle begins when a product is released and ends when it's no longer supported. Knowing key dates in this lifecycle helps you make informed decisions about when to upgrade or make other changes to your software. This product is governed by Microsoft's Modern Lifecycle Policy.
The .NET Core support lifecycle offers support for each release. The length of time and degree of support vary based on a few qualifications.
Customers can choose Long Term Support (LTS) releases or Current releases. LTS releases will receive only critical and compatible fixes throughout their lifecycle. Current releases will receive these same fixes and will also be updated with compatible innovations and features.
Within a release's support lifecycle, systems must remain current on released patch updates.
We will publish new major releases of .NET Core on a regular cadence, enabling developers, the community and businesses to plan their roadmaps. Beginning with .NET Core 3.1, these releases will happen every November and every other release will be LTS.
LTS releases are supported for three years after the initial release.
.NET Core 1.x was released under an earlier definition of LTS. For more details, see .NET Core 1.x "shorter" LTS definition.
Current releases are supported for three months after a subsequent Current or LTS release.
Customers choosing LTS will need the latest patch update installed to qualify for support. If a system is running 1.0 and 1.0.1 has been released, 1.0.1 will need to be installed as a first step. Once a patch update has been installed applications will begin using the update by default. LTS releases will be supported for 3-years after general availability, or for a 12 month Maintenance period after the next LTS release ships, whichever is longer.
In addition to staying current with the latest patch update, customers using Current will need to update as new minor versions are released to stay in support. The latest released minor version will become the minimum serviceable baseline after release. After a 3 month Maintenance period, the previous minor version will no longer be supported. For example, after 1.2 releases systems running version 1.1 will have 3 months to update to 1.2 to remain eligible for support. Applications do not automatically begin using the new minor update.
End of support refers to the date when Microsoft no longer provides fixes, updates, or on-line technical assistance. End of support may also be referred to as 'end of life' or abbreviated 'EOL'. This is the time to make sure you have the latest available update installed.
Updates are cumulative, with each update built upon all of the updates that preceded it. A device needs to install the latest update to remain supported. Updates may include new features, fixes (security and/or non-security), or a combination of both. Not all features in an update will work on all devices. Update availability may vary, for example by country, region, network connectivity, or hardware capabilities (including, for example, free disk space).
Support for ASP.NET Core 2.1 on .NET Framework matches the ASP.NET Support policy for other package-based ASP.NET frameworks. The complete list of packages covered by this policy can be seen in ASP.NET Core 2.1 Supported Packages
.NET Core is supported across several operating systems and versions. The .NET Core OS Lifecycle Policy provides current details on operating systems support policies and versions.
This table tracks release dates and end of support dates for .NET Core versions.
|Version||Original Release Date||Latest Patch Version||Patch Release Date||Support Level||End of Support|
|.NET Core 3.1||December 3, 2019||3.1.6||July 14, 2020||LTS||December 3, 2022|
|.NET Core 3.0||September 23, 2019||3.0.3||February 18, 2020||EOL||March 3, 2020|
|.NET Core 2.2||December 4, 2018||2.2.8||November 19, 2019||EOL||December 23, 2019|
|.NET Core 2.1||May 30, 2018||2.1.20||July 14, 2020||LTS||August 21, 2021|
|.NET Core 2.0||August 14, 2017||2.0.9||July 10, 2018||EOL||October 1, 2018|
|.NET Core 1.1||November 16, 2016||1.1.13||May 14, 2019||EOL||June 27 2019|
|.NET Core 1.0||June 27, 2016||1.0.16||May 14, 2019||EOL||June 27 2019|
.NET Core preview releases are supported through Microsoft Developer Support only if they are specifically designated 'Go-Live'. In such cases the license allows you to deploy applications built on the specified .NET Core, ASP.NET Core, Entity Framework Core preview to production environments and provides access to Microsoft Support. For an explanation of available support options, please visit Support for Business and Developers.
The support lifecycle for applicable pre-releases is as follows.
|Version||Release Date||End of Support|
|.NET Core 3.0 RC1||September 16, 2019||October 31, 2019|
|.NET Core 2.1 RC1||May 8, 2018||June 30, 2018|
|.NET Core 1.0.0 RC1||February 15, 2016||July 16, 2016|
|.NET Core 1.0.0 RC2||May 16, 2016||September 27, 2016|
For assisted support with .NET Core technologies, contact a Microsoft Support Professional.
Community support is a great way to get help and even contribute to the projects. See the Community page for details.