Office 2013 products and Skype for Business 2015 end of support on April 11, 2023
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The following Microsoft Office products will reach end of support on April 11, 2023:
Lync 2013 and Lync Phone Edition
After this date, these products will no longer receive security updates, non-security updates, bug fixes, technical support, or online technical content updates. It is strongly recommended that customers running legacy versions migrate to Microsoft 365.
There will not be an option to extend support for any of the products listed in this article beyond April 2023.
To enable customers to plan and implement a successful upgrade, Microsoft offers the following resources:
App Assure program
Migration roadmap by product:
For devices not yet ready to upgrade to the cloud, Microsoft has recently launched Office LTSC (Long Term Servicing Channel) - designed for devices that that are unable to accept feature updates or are not connected to the internet.