Disable shared mail folder caching

This policy setting allows you to control the caching of shared mail folders.

If you enable this policy setting, Outlook will only cache shared non-mail folders.

If you disable or do not configure this policy setting, shared mail and non-mail folders you have access to are cached in your .ost file when you add another mailbox to your profile.

Supported on: At least Windows 7
Registry Pathsoftware\policies\microsoft\office\16.0\outlook\cached mode
Value Namecacheothersmail
Enabled Value0
Disabled Value1


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