performance issue with too many items in Outlook folders (online mode)

  • Thread starter Thread starter ChrisD0919
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ChrisD0919

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I have users complained slowness when switching folders. I saw many folders with more than 35,000 items. We have mixed Outlook 2010 and Outlook 2016. I recall that MS has a KB related to Outlook performance and number of items in it. I think it said that user will experience slowness when a folder having more than 2,000 items in online mode. But I can't find it anymore. I only found this link which is for Outlook in Cache mode.

https://support.microsoft.com/en-us...s-when-there-are-too-many-items-or-folders-in

Since we are not using cache mode, at least for now what is the MS limit, for Outlook 2010 and Outlook 2016?

Thanks in advance.

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