This will all increase the user's OST size but should help make sure they're getting their daily work items locally. Cached Exchange Modes purpose is to provide a seamless online and offline Outlook experience. Also make sure you're caching public folder favorites if you use public folders.
Http:/ / / 55712-outlook-startup-performance-tip-with-exchange-over-httpĪdditionally make sure you're caching other attached mailboxes if people open shared mailboxes or you have assistants attaching to other mailboxes. How to fix Outlook when it's working offline: switching from offline to online mode, missing 'Work Online' button and the potential reasons why Outlook keeps getting offline. Go in to the Exchange Proxy Settings in Outlook and make sure both boxes are checked to use HTTP first for both Fast and Slow networks (default is only slow.) I would probably suggest making sure Outlook is configured to download full items as opposed to headers only or headers and full items under the theory that they're getting the headers but then go to open the message before it is actually cached.Īlso since the server is remote I assume you're running with Outlook Anywhere. Copies of your email and calendar items are kept on your computer in an offline Outlook Data File (.ost). This is called working offline or using Cached Exchange Mode. We earlier said that there are many old ways of getting the Safe Mode in Windows 10. With an Exchange email account, you can work on your email messages even when youre not connected to the Exchange Server in your businesss IT department. Are you seeing any correlation with specific users or items? it is not a VBA project or a COM add-in) and you are using the SafeItem family of objects or set the RDOSession.