Article Outlook: Turning off Cached ..

By default, the Outlook data file resides in your local user's \"Documents\" folder. So you'll want to make sure OneDrive is not syncing that folder. By default, the Outlook data file resides in your local user's "Documents" folde This article details how to turn off Cached Exchange Mode in the Microsoft Outlook Desktop App for Windows as a way to clear the Outlook cache. If the issue persist with new profile, you could move this mailbox to another database for repair. Use Cached Exchange Mode to work with items in your Microsoft 365 or Microsoft Exchange Server mailbox even when your network connection is slow or unavailable. You cannot use Cached Exchange Mode with a POP or IMAP account. If Outlook is stuck in Offline mode, see Work offline in Outloo Turning it off and on again wont do reset cached Exchange mode anything except except re-connect their outlook to an already broken cache. "Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened. The information store could not be opened." Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. By default, 12 months of your email is available offline, but you can control how much mail is kept offline. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Make sure outlook is closed and rename the folder to something else - Outlook-bad is usually enoug If your Outlook OST file isn’t syncing properly with Office 365, you’re not alone. Thousands of users face corrupted OST files, sync errors, and missing mailbox data after system updates or unexpected shutdowns. In this 2025 guide, we’ll show you how to repair the Outlook OST file and restore seamless email performance without losing important data. Repairing Outlook’s .OST and .PST files often restores full mailbox synchronization and prevents email loss. Always close Outlook properly, maintain smaller data files, and use the SCANPST tool or SaRA assistant for preventive maintenanc Sometimes, Outlook sync issues can arise because of poor internet connection. If you are still facing this issue, kindly follow the solutions below to fix the sync issues in Outlook. This issue usually happens when Outlook cannot properly connect or sync with your mail server. In this FixTechGuide tutorial, we’ll explore the causes and give you clear, step-by-step solutions to fix it fast. Now, we will verify the server settings to fix the Outlook synchronization erro To get the sync working you will either need to delete users or have the user limit on your account increased. Find out what to do if you are having issues with syncing users or groups from Microsoft 365. Are you facing Microsoft Office 365 not opening or continuing to crash? This is one of the most frustrating issues with Microsoft Office, often caused by update failures, corrupted files, or compatibility problems. It seems to be some sort of error with the user not being able to connect and sync with M365 servers. For managed setups, we can push a PowerShell script with Intune or Group Policy to clear cached tokens on all device If users are facing syncing issues in Outlook due to corrupt Outlook data files, they must choose a professional tool, like Shoviv OST to PST Converter Tool. This software allows users to process numerous OST files at once without any size limitations. Moreover, it maintains the folder hierarchy and metaproperties of the data when processing Outlook data file For more information, see the More reset cached Exchange mode information section of this article. After performing these steps, Outlook’s all folders will be synced to the server. If this method doesn’t work for you, navigate to other solutions. Before you dive into folder sync issues, read our complete Outlook and Office 365 Sync Guide for an overview of how synchronization works. By limiting synchronization to active folders, Outlook finishes updates faster and avoids timeout Sync failure alerts do not always include a full summary or attachment, you can run a test sync to obtain this data. We check that Microsoft Entra Connect (Azure AD Connect) runs the latest version and password sync is on. Keeping things updated helps avoid compatibility issues between reset cached Exchange mode on-premises Active Directory and Microsoft 365. If problems stick around, we rejoin the devices to Microsoft 365 services. Start by disconnecting the device from Work or School Account settings, then reconnect with the user’s updated passwor This tool also helps users fix Outlook syncing issues by repairing OST or PST files and syncing the data smoothly. When Outlook gets stuck on "Synchronizing Folders", it’s usually a sync or file corruption issue — not a permanent failure. By following these methods step-by-step, you can restore full email synchronization reset cached Exchange mode without reinstalling Outlook. FixTechGuide continues to help users resolve Outlook and Office 365 errors quickly and safel