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KB3161916 Published to address issue with migrating from legacy to modern public folders

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The_Exchange_Team
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May 11, 2016

Customers currently in the process of finalizing a migration from legacy Public Folders in Exchange 2010/2007 to Modern Public Folders in Exchange Online or Exchange 2016/2013, should read KB3161916. We’ve identified a scenario which, although it doesn’t appear to be common, could result in a loss of data.  If you have previously completed a migration of legacy to modern public folders and believe you may have encountered data loss, please contact support services for additional assistance. Exchange Team

Published May 11, 2016
Version 1.0
  • Deleted's avatar
    Deleted
    Jun 22, 2016
    Has this been addressed in the latest CU13 for Exchange 2013?
    • Deleted's avatar
      Deleted
      Jun 22, 2016
      Yes, --> https://blogs.technet.microsoft.com/exchange/2016/06/21/released-june-2016-quarterly-exchange-updates/
  • Deleted's avatar
    Deleted
    Jun 02, 2016
    Any experience in the migration of 500GB in 50.000 PublicFolders to Modern PF ?

    Source is Ex2010Sp3 latest RU.

    How long does it take?

    • Deleted's avatar
      Deleted
      Jun 02, 2016
      I did a migration for a customer a couple of months ago.

      Customer had 5000 Public folders, with a total data size of 950gb.

      initial sync took around 12 hours to complete with batch migration.

      Finalization took around 1 hour to complete. All PF servers was in same site.

      Was migrating from Ex2010 to Ex2013 with the latest RU/CU at the time of the migration.

      Be sure to check logs before completing migration, and fix the errors you probably will encounter.

  • Deleted's avatar
    Deleted
    May 20, 2016
    How i go by modern my files and e-mail together
  • Deleted's avatar
    Deleted
    May 15, 2016
    Thanks for the fix :)

    Any updates you can share about migrating Modern Public folders to Exchange Online?

    • Deleted's avatar
      Deleted
      May 15, 2016
      That's what I've been waiting for. I moved my public folders from Exchange 2007 to Exchange 2013. Now I want to move them to Exchange Online but I can't (now without some 3rd party service).
  • Deleted's avatar
    Deleted
    May 12, 2016
    Thanks Team for sharing this information....
  • Deleted's avatar
    Deleted
    May 12, 2016
    @Thomas, correct, single PF Database environments won't be affected by this issue.
  • Deleted's avatar
    Deleted
    May 12, 2016
    So it is related to a segmented PF database infrastructure, but not if you use a single PF database?