After changing computer, sub-folders are missing in cached mode

THOMAS 1 Reputation point
2021-11-25T07:51:24.413+00:00

Hello,

I configure an existing email (based on exchange server) on a new computer with cached mode 'all', but all subfolders are missing. OWA is ok and synchronisation on the old computer works fine. There is a lot of folders and subfolders on 3-4 levels ; maybe 1400 folders.

If cached mode is desactivated, all is ok.

I tried to tranfer the top level folder in a new folder from OWA interface, but no synchronisation of the subfolders.

I tried :

Outlook.exe /cleanviews

Outlook.exe /resetnavpane

Outlook.exe /resetfolders

but nothing worked.

If I generate a pst file from the exchange interface, all the folders and subfolders are ok in the file.

any help would be apreciated

thomas

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.
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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.
7,349 questions

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  1. Yuki Sun-MSFT 40,856 Reputation points
    2021-11-26T02:52:17.207+00:00

    Hi @THOMAS ,

    There is a lot of folders and subfolders on 3-4 levels ; maybe 1400 folders.

    Based on my experience, 1400 folders are quite a large amount for Outlook desktop client running in cached mode. While it's not necessary that every Outlook client will be affected as other factors like hardware configurations are also involved, but indeed, this large number of folders may lead to Outlook performance issues like folders not displaying correctly. See
    Outlook performance issues when there are too many items or folders in a cached mode .ost or .pst file.

    With the above being said, please try adjusting the "Mail to keep offline" setting to reduce the caching period and see if there would be any improvement.

    In case the issue persists, personally I'd suggest considering using online mode on the new computer instead.

    Additionally, below is a blog I found which talks about a relevant topic for your reference:
    Revisiting Outlook maximum folder limitations
    Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information

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