OneDrive for Business owners could exclude their sites from Office 365 searches but they can’t any longer after Microsoft acted to remove the capability from OneDrive site settings. All OneDrive for Business sites are now indexed and available to Office 365 searches.
Microsoft has confirmed that disconnected Exchange Online mailboxes are not included in the sources scanned by Office 365 content searches, thus clearing up some misunderstandings that might have existed in the field. The bottom line is that if you want to search mailboxes that don’t belong to accounts, you should use inactive mailboxes.
If you want to include SharePoint Online and OneDrive for Business locations in an Office 365 content search, you need to know the URLs of the target sites. Finding the URLs can be problematic, but here’s some easy ways to do the job. PowerShell, as usual, comes up trumps…
Office 365 tenant administrators can use different ways to access user data. Shouldn’t you have a policy to govern that access?