SharePoint Developer Attention: Retirements in 2026 - New story: SharePoint Framework Field Customizers (MC1094051)

In 2026 Microsoft sends some developer functions to retirement. It is important to update affected functions early and to replace these function with recommended replacements. Here are a (developer) list of the announced reitirements:

  • SharePoint 2013 Workflows
  • SharePoint Add-ins
  • SPFx Isolated Web Parts
  • Azure Access Control Service (ACS)

All the above will be retired on 02.04.2026.

With the message (MC1094051) from 13. Juni 2025 Microsoft announced the shut down for the SharePoint Framework Field Customizers in Lists and Document Libraries, too.

Support for SharePoint Framework (SPFx) Field Customizers in Lists and Document Libraries will be retired. Alternatives like Column Formatters are recommended for better performance. The timeline is being assessed, and organizations should plan their transition. Other SPFx extensions will continue to function. No immediate impact is expected.


A lot of developers used this possibility to extend list and libraries with custom layouts for columns. But not only for layout - especially for custom logic behind the column. This means it is not possible to replace it with JSON-based Columns Formatting because there is no custom (logic) code possible. The recommended replacemente regarding Microsoft are:

BUT regarding the last update fom 20.06.2025 the announcement for the "SharePoint Framework Field Customizers in Lists and Document Libraries" is in DECISION again 😊

Updated June 20, 2025: We will not be proceeding with this change at this time. Thank you for your patience.

We are evaluating deprecating FieldCustomizer. We are working with you all to understand the impact. We don't have a date to share for this deprecation. When we do announce a date, it will be at least a year in the future from that announcement

But it is still a bad feeling now.
I'm not sure if I should use field customizer in future or for new projects 🤔  

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