Tag: Public Folders

In a November 18 post, Microsoft describes some Exchange Online security updates that are due to land between now and 2026. Some of the news is a restatement of previously announced information, like the deprecation of EWS in October 2026. New information includes some information about feature caps that the Graph APIs cannot close when EWS goes away. And then there’s a hint about the demise of public folders (again!)

You can use a public folder to store and share global email contacts, but a better approach is to use Exchange mail contacts. These objects show up in the Exchange GAL and OAB and are available to all Outlook clients (and some third-party clients too).

A recent update for Exchange Online gives extra control over who can access public folders. The change is intended to help with scalability, but it can be used to turn public folders off for any mailbox for which you care to disable access.