Will the react-script-editor SPFx app continue to work after April 1, 2026?

[cjmorelock]

I know similar questions have been asked here: #5346 and here: #5346. But it would be nice to get a definitive answer to this question from someone with the proper expertise. @wobba ?

I have set the "requiresCustomScript": false option in the ScriptEditorWebPart.manifest.json file before packaging and deploying the solution as described here:
https://github.com/pnp/sp-dev-fx-webparts/tree/main/samples/react-script-editor#deploy-to-non-script-sites--modern-team-sites .
And I have confirmed that, having configured the SPFx app in this way, my "Modern Script Editor web parts" continue to work as of now on SharePoint Online sites where "Custom scripts" are "Blocked".

Will these web parts stop working on April 1, 2026 due to changes Microsoft will make, or will they continue to work?

[wobba]

You need to rebuild it and deploy for it to work. See #5633