#Office 365 outlook crashing download#
They recommend caching user mailboxes and un-caching shared mailboxes or at the least disabling download of shared folders – We already have the secondary mailbox in online only mode. The only suggestions from Outlook support were that users should be using a shared mailbox instead of a user mailbox but I cant see how this would make any difference at all to connectivity to ExO.
Tweaking NIC settings to disable low power mode etc Running SARA/Outlook diagnostic tool – Nothing obvious or critical identified from what I can seeĬhecking AutoDiscovery settings - Nothing obvious or critical identified from what I can seeĬontacting Outlook support via Outlook Help menu (zero luck there)Ĭhecking Outlook connection status (control right click on Outlook icon > Connection status) for errors (none) and reconnecting when locked up - No effect, doesn't brink Outlook back Running continuous ping in PingPlotter to determine any connectivity issues (none identified)ĭisabling “Optional connected experiences”
#Office 365 outlook crashing windows#
Running Outlook in Safe mode to eliminate pluginsĭisabled web plugins when outside of Safe modeĭisabling Anti-virus (Webroot SecureAnywhere)Įnabling cached mode for the secondary mailbox and setting retention to 3 monthsĪpplying all windows updates and Office 365 updates I have tried the following none of which has made a difference to performance with users : The mailbox is in online only mode because caching not only requires a huge OST and takes a long time to download on new installs but also results in delays between users when items are moved, flagged or categorised. This specific team uses the secondary mailbox to triage and manage many incoming emails with attachments and they need to coordinate with each other and move mail items into sub folders based on region or job type. Second user/mailbox is assigned E3 licence. In Place backup is enabled for the second mailbox. Users are configured with personal user mailbox and secondary user mailbox (50Gb in size) which is not cached. We have multiple Outlook 365 users experiencing freezes/white screen from 10 seconds to 5 minutes or more when using a large shared user mailbox.
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