Microsoft Silverlight Support Lifecycle Policy

Microsoft is announcing a support lifecycle policy today for the Microsoft Silverlight product.

In the past, Microsoft Silverlight was shipped out-of-band and did not take a Support Lifecycle typical of many Microsoft products. To clarify the Support Lifecycle situation for customers, Silverlight will be defined as a "Tool."

A "Tool" is defined as a utility or feature that aids in accomplishing a discrete task or a limited set of tasks. Major Tool versions receive a minimum of 12 months notification prior to the end of support. Otherwise, support ends contemporaneously with the product versions for which they are intended (for example, Microsoft Windows).

Note: Some Tools may receive security updates or feature enhancements. Customers may be required to install the latest update of the supported Tool’s major version to receive support.

The Microsoft Support Lifecycle (MSL) policy provides transparent, predictable information regarding the support lifecycle of Microsoft products. More information is available on the MSL Web site http://support.microsft.com/lifecycle

Accompanying FAQ:

Support Lifecycle policy for Microsoft Silverlight

Microsoft will continue to support all versions of Silverlight by shipping updates to the latest version of both Silverlight runtime and Silverlight SDK. Updates and new versions of the Silverlight runtime are backward compatible with web applications built in previous versions of Silverlight and will include the latest security enhancements, performance improvements, and product fixes. Previous versions that are still under support will be updated in the event the Microsoft Security Response Center (MSRC) determines a vulnerability has been found in Silverlight.

For support Lifecycle information on a specific Silverlight version select one of the following:

Silverlight 1
Silverlight 2
Silverlight 3
Silverlight 4
Silverlight 5

Silverlight 1 – Microsoft will continue to provide no charge assisted and unassisted support for customers using versions of Silverlight 1 through October 12, 2010. Customers will be able to obtain assisted no-charge support in the form of upgrade install assistance to the latest version of Silverlight. Microsoft will ship updates for MSRC vulnerabilities to the Silverlight 1 runtime.

Developers using the Silverlight 1 development tools and developing applications for Silverlight 1 can use paid assisted-support options to receive development support in the form of reasonable workarounds. Where possible, customers will be strongly encouraged to upgrade their development environments to the latest version. Microsoft will ship updates to the Silverlight 1 runtime or Silverlight 1 SDK for security vulnerabilities as determined by the MSRC.

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Silverlight 2 – Microsoft will continue to provide no charge assisted and unassisted support for customers using versions of Silverlight 2 through October 12, 2010. Customers will be able to obtain assisted no-charge support in the form of upgrade install assistance to the latest version of Silverlight. Microsoft will ship updates to the Silverlight 2 runtime or Silverlight 2 SDK for security vulnerabilities as determined by the MSRC.

Developers using the Silverlight 2 development tools and developing applications for Silverlight 2 can use paid assisted support options to receive development support in the form of reasonable workarounds. Where possible, customers will be strongly encouraged to upgrade their development environments to the latest version. Microsoft will ship updates to the Silverlight 2 runtime or Silverlight 2 SDK for security vulnerabilities as determined by the MSRC.

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Silverlight 3 – Microsoft will continue to provide no charge assisted and unassisted support for customers using versions of Silverlight 3 through April 12, 2011. Customers will be able to obtain assisted no-charge support in the form of upgrade install assistance to the latest version of Silverlight. Microsoft will ship updates to the Silverlight 3 runtime or Silverlight 3 SDK for security vulnerabilities as determined by the MSRC.

Developers using the Silverlight 3 development tools and developing applications for Silverlight 3 can use paid assisted support options to receive development support in the form of reasonable workarounds. Where possible, customers will be strongly encouraged to upgrade their development environments to the latest version. Microsoft will ship updates to the Silverlight 3 runtime or Silverlight 3 SDK for security vulnerabilities as determined by the MSRC.

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Silverlight 4 – Microsoft will provide assisted and unassisted no charge support for customers using versions of Silverlight 4 through January 8, 2013. Paid support options are available to customers requiring support with issues beyond install and upgrade issues. Microsoft will ship updates to the Silverlight 4 runtime or Silverlight 4 SDK for security vulnerabilities as determined by the MSRC.

Developers using the Silverlight 4 development tools [and developing applications for Silverlight 4 can use paid assisted-support options to receive development support. Microsoft will continue to support Silverlight 4 development by shipping updates to the Silverlight 4 runtime and, if appropriate, may ship updates to the Silverlight 4 SDK.

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Silverlight 5 – Microsoft will provide assisted and unassisted no charge support for customers using versions of Silverlight 5. Paid support options are available to customers requiring support with issues beyond install and upgrade issues. Microsoft will continue to ship updates to the Silverlight 5 runtime or Silverlight 5 SDK, including updates for security vulnerabilities as determined by the MSRC. Developers using the Silverlight 5 development tools and developing applications for Silverlight 5 can use paid assisted-support options to receive development support.

Silverlight 5 will support the browser versions listed on this page through 10/12/2021, or though the support lifecycle of the underlying browsers, whichever is shorter. As browsers evolve, the support page will be updated to reflect levels of compatibility with newer browser versions.

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Future announcements regarding the Support Lifecycle for Silverlight will be made available at http://support.microsoft.com/lifecycle and http://support.microsoft.com/Silverlight.

The Microsoft Support Lifecycle (MSL) policy provides transparent, predictable information regarding the support lifecycle of Microsoft products. More information is available on the MSL Web site http://support.microsoft.com/lifecycle.

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Last Review : March 15, 2013