Microsoft 365 – Major Update – SharePoint Framework domain isolated web parts retirement – key dates

Hi All,

Greetings.

Today sharing one more Major Update related to SharePoint Framework components

MAJOR UPDATE – SharePoint Framework domain isolated web parts retirement – Microsoft is retiring SharePoint Framework domain isolated web parts.

What are SharePoint Framework domain isolated web parts ?

• Since the domain isolated web parts are retiring now, no need to know 🙂 But still I’ll share some references here if you want to know more
• Domain isolated web parts allow developers to create web parts that run in a separate domain from the host page, providing an additional layer of security and isolation.
• Isolated web parts introduce a new way to isolate access to APIs secured with Azure AD (e.g. – Microsoft Graph) and ensure that only specific SharePoint Framework web parts are allowed to obtain an access token for the particular API.
• Domain isolated web parts are used for communicating securely with resources outside of SharePoint and rendered inside iframe.
• For more details, please have a look –
  • https://learn.microsoft.com/en-us/sharepoint/dev/spfx/web-parts/isolated-web-parts-retirement
  • https://learn.microsoft.com/en-us/sharepoint/dev/spfx/web-parts/isolated-web-parts

DETAILS

• Microsoft is retiring SharePoint Framework domain isolated web parts.
• Starting April 2, 2025, new tenants won’t have this feature.
• It will be removed for existing tenants on April 2, 2026.
• If tenants are still using domain isolated web parts then they’ll see the web part render and error message and stop functioning.
• Organizations should update and redeploy affected web parts as regular web parts.

Recommendation from Microsoft or Action to be taken in our organization

• Update the impacted web parts as regular web parts and redeploy them.

How to check whether Isolated web parts are installed in our tenant

• We can verify if the SharePoint admin center API access page (_layouts/15/online/AdminHome.aspx#/webApiPermissionManagement) contains permissions listed under the Isolated grouping.

• If in our tenant there is no isolated SPFx component installed then there is no “Isolated” grouping as shown in below fig

To know more about installed domain isolated SPFx component in our tenant, Microsoft is sharing PowerShell script. Please have look the script in given article – https://learn.microsoft.com/en-us/sharepoint/dev/spfx/web-parts/isolated-web-parts-retirement

Important Note: There will not be an option to extend domain isolated web parts beyond April 2, 2026.

Thanks for reading! HAVE A FANTASTIC TIME AHEAD!!!