With these changes Outlook cached mode behaves very similar to online mode.
There is no change in network bandwidth with this configuration - it just configures Outlook to go on "mail runs" more frequently.
also manually restart the information store service!
Some users are having issues with their mailboxes not updating automatically, they need to click update folder every couple of minutes, send and receive doesn't work either for their mailboxes.
has long been a good source of information about Outlook.
When I reply back to the email received externally, I don't get an NDR, yet the user cannot see my email.
When changes occur within the main Global Address Book (GAL) on the Office 365, computers running Outlook 20/2016 may not automatically receive the updates.
If this is happening, then you may notice missing, non-existent and/or incorrect entries.
-Is there a way to prioritise which mailbox updates?
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