Hi @Glenn Maxwell
Please create a new Outlook profile as prompted in Control Panel > Mail > Show Profiles > Add. Only configure with your Exchange account. Then set to prompt for a profile when start Outlook.
Open this new profile in Outlook, then go to 'File' > 'Account Settings' > Select the account and click 'Change', On the Server Settings tab please untick "Use Cached Exchange Mode". Exit and restart Outlook to have a check.
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