(Updated) SharePoint Designer 2013 reaches end of support on July 14, 2026

🚨 The Signal: SharePoint Designer 2013 reaches end of support on July 14, 2026. Continued use after this date will result in unsupported, unpatched customisations, posing a significant security risk to SharePoint Online environments.

The Impact

Organisations using SharePoint Designer 2013 are at high risk of security vulnerabilities if workflows are not migrated to supported platforms.

• Security Teams: Increased attack surface from unpatched customisations.
• SharePoint Admins: Operational risk from unsupported workflows.
• Compliance Officers: Non-compliance with security standards due to legacy software.

The Action

1. Identify all SharePoint Designer 2013 workflows and customisations within your tenant.
2. Develop a migration plan to transition identified workflows to Power Automate or other supported solutions.
3. Utilise the SharePoint Migration Tool (SPMT) to assist with migrating supported workflow actions.
4. Update internal documentation and incident response plans to reflect the retirement of SharePoint Designer 2013.
5. Communicate the change and migration timelines to relevant stakeholders and end-users.

Domain: SharePoint · Impact: high · Workload: SharePoint · Essential Eight: Patch Applications · ISM: ISM-0304, ISM-1690, ISM-1691, ISM-1692, ISM-1693, ISM-1698, ISM-1699, ISM-1700, ISM-1704, ISM-1807, ISM-1808, ISM-1876, ISM-1901, ISM-1905