How can I avoid Outlook slowing down?
Keep shared mailboxes small by turning on an online archive and a retention policy that moves older messages automatically.
Outlook Performance FAQ
Keeping Outlook fast with large shared mailboxes.
What should I do if PST files become corrupt?
Use online mode instead of cached mode for shared mailboxes, so they do not add to each person’s local PST file.
Still have a question?
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