Hi Jacs,
Welcome to the Microsoft Q&A forum.
From your description, it looks like your contacts are missing in Outlook on Windows 11, while they are still visible on your iPad and iPhone. That can be confusing and concerning, especially if contacts appear to be intact on other devices.
I see there is already a Q&A Assist reply in the thread covering common checks and recovery steps. If you have had a chance to try those suggestions and the issue remains, I would like to add some additional context. We have noticed similar recent reports of contacts not appearing correctly in the new Outlook for Windows, for example: https://learn.microsoft.com/en-us/answers/questions/5837171/contacts-in-outlook-365
In this community, contributors can help share observations and guide next steps, but there is no access to backend synchronization data. To help the Outlook team investigate patterns like this, submitting in‑app feedback is strongly recommended, as it allows diagnostic data to be collected directly from your Outlook app.
Please submit feedback directly from the new Outlook using these steps:
- Open Outlook on your Windows PC.
- Select Help from the top menu.
- Choose Feedback.
- Submit the issue with a short description, and include screenshots if possible.
This feedback goes directly to the Outlook product team and helps with investigation of sync‑related issues that may not be visible from account settings alone.
I hope this helps clarify the situation and ensures your report reaches the right team for review.