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We are running Exchange 2013 and have configured the Hybrid connection. We've only moved test mailboxes so far. We have Public folders in 2013 that we only use the Organizational Forms for (for our archiving solution). Rather than migrating the Public folders, it is okay to just create a new Public Folder in 365. Am i right in thinking that the on-premise mailboxes will continue to access the 2013 Public Folders and the mailboxes that get migrated will only be able to access the 365 Public folders.
I am writing here to confirm with you how thing going now?
If those suggestion help, please be free to mark it as an answer for helping more people.
You can't have two Public Folder trees like that across on-prem and Exchange Online.
You need to either migrate then to Exchange Online, leave them on-prem or remove them completely.
Personally, if you using these just for org forms, I would look to get rid of them and find another solution for the archiving piece.
Thank you
The question i had was that i don't want them to work across on-prem and online, ideally i'd like them to work separately.
So they currently work on-prem for the mailboxes that haven't been migrated.
What i was wondering was, if i add a new Public folder to Exchange Online, will only the mailboxes that have been migrated access it, understanding that they can no longer access the on-prem Public folders
Hi @Chrissy R ,
Yes, sorry, I may not have been clear enough. You can't add a public folder in Exchange Online unless the public folder hierarchy and folders themselves have been migrated as well.. Outlook can only see and access one hierarchy, so both the on-prem and Exchange Online mailboxes can only see the on-prem public folders right now. Once all the on-prem mailboxes have been moved to Exchange Online, then you can migrate the Public Folders as well and then, and only then, can you add more Public Folders in Exchange Online. Right now, you can only add and remove them on-prem.
@Chrissy R I tested this in my hybrid environment:
So, I think your plan is feasible.
That's not the question however. The question as whether an org can have public folders in both Exchange Online and On-Prem at the same time. That is not supported.
In a hybrid deployment, your users can be in Exchange Online, Exchange on-premises, or both, and your public folders are either in Exchange Online or Exchange on-premises. Public folders can only reside in one place, so you must decide whether your public folders will be in Exchange Online or on-premises. They can't be in both locations. Public folder mailboxes are synchronized to Exchange Online by the Directory Synchronization service. However, mail-enabled public folders aren't synchronized across premises.
Based on another testing, the migrated mailbox could see the subfolder hosted on Exchange online, but cannot see the organization library which hosted on Exchange online.
But, based on the first testing, there could existing different public folder view for Exchange online mailbox and Exchange on-premises when in a hybrid organization(Not suitable for organization library).
and not supported! :)