Ssis-661 =link=

After adding the user, you must refresh the catalog in SSMS (right‑click SSISDB → Refresh) to see the new role.

Keep a test Windows account that mirrors the production service account. Use it to validate permissions before rolling out changes to production. SSIS-661

you can eliminate the risk, keep data integrity intact, and avoid costly downstream fixes. After adding the user, you must refresh the