“Use new search experience" setting is missing in Admin Center

Symptom

In Admin Center user is unable to see this new toggle button for new Relevance Search V2 Feature.

Use the Org link to check Org Settings using this Web API:

https://<Org URL>/api/data/v9.1/organizations and see canoptoutnewsearchexperience is null

Resolution

Pre-Requisite: Make sure to verify DB version and CRM Server Version were in sync. Use Unify to check DB version and Help -> About on the Org for CRM Server Version. If not same then get the DB updated for both to be in Sync.

Once you verify this is same then see this blog article:

Configure Relevance Search to improve search results and performance - Power Platform | Microsoft Learn

Document mentions that this toggle is not always available. It is available only if Customer was already using Old Relevance Search before the bits were updated with new Search code.

Other References:

Blog: Introducing the new search experience in model-driven Power Apps | Microsoft Power Apps

For example:

Incident 214690614 : D365C – “Use new search experience" settings missing for instance : https://envisiondev.crm.dynamics.com

Similar Incident:

Incident 214556379 : Sydney 3] | [Apollo FF-CI]: Customer noticed two instance that enabled with 'new search experience' while ot...