Outlook Public Folders

Mark Sanchez 61 Reputation points
2022-04-05T15:46:42.59+00:00

We have had issues with our Outlook/Exchange Public folders for some time. During our ongoing support with Microsoft over the issue, we were told to export our entire public folder store to a PST file. By default, the maximum size of a PST for Outlook 2016 is 50 GB, however we have come across posts and videos that say we can increase this size (as long as we have the available resources), but our PF store is almost of 650GB in size. Will Outlook even be able to open a PST of this size or is the 50GB limit only the default for what can be written out?

BTW, we have increased the registry settings (per this link and others) to allow a larger PST and now have it up to 230GB and counting...
https://www.youtube.com/watch?v=B4Mfd-OEWk8

Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
5,004 questions
Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,440 questions
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Accepted answer
  1. Andy David - MVP 143.8K Reputation points MVP
    2022-04-05T15:59:17.407+00:00

    Yea, its going to probably give you problems with psts that large. Even if you can open them.

    https://www.msoutlook.info/question/852#:~:text=By%20default%2C%20a%20Unicode%20pst,default%20limit%20can%20be%20adjusted.

    Can you break/export into smaller psts?


1 additional answer

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  1. Andy David - MVP 143.8K Reputation points MVP
    2022-04-05T18:03:49.237+00:00

    Ugh, yea not really a good way to do that. Im surprised Msoft suppor suggested this actually.