This feature update will align the search box experience for guest users with regular users by placing it at the top of the page in the suite header. The search box for guest users will move to the top of the screen across OneDrive, SharePoint, and Lists apps, similar to how it appears for regular users. This message is associated with Microsoft 365 Roadmap ID 81983.
When this will happen
Targeted release (select user and organization) will begin rolling out in mid-June and Microsoft will complete the Standard release by late June.
How this will affect your organization
Guest users who sign in to SharePoint sites, OneDrive folders, Microsoft Lists will start to see the search box where your regular users see it at the top middle of the page in the Office 365 suite navigation bar. OneDrive for Business folders shared with guests used to not show a search box and will start to show the search box after this change.
Note: Guest users will not be able to search in SharePoint Start Page, unchanged from the behavior Microsoft have today.
What you need to do to prepare
You might want to notify your users about this new capability and update your training and documentation as appropriate.
Message ID: MC262778
Effective: June 17, 2021