You see the red banner reading “Disconnected” at the top of Outlook even though your internet connection is active and other apps can reach the web. This occurs when Outlook loses its connection to the Exchange server or Microsoft 365 service while the underlying network remains online. The banner prevents you from sending or receiving … Read more
When you try to save an email, calendar item, or contact in Outlook, the error “Requested Operation Failed (0x80004005)” may appear. This error code 0x80004005 is a generic COM error that Outlook generates when it cannot complete a save operation due to a corrupted file, permission conflict, or add-in interference. This article explains the most … Read more
When you wake your Windows computer from sleep, Outlook may get stuck displaying “Trying to connect” in the status bar and never reconnect to Microsoft 365 or your mail server. This loop happens because Outlook's network detection fails to recognize that the network adapter has fully resumed, causing the connection attempt to hang indefinitely. This … Read more
When you try to access a public folder in Outlook, you might see the error message: “Cannot expand the folder. The set of folders cannot be opened.” This usually means Outlook cannot connect to the public folder hierarchy stored on your Microsoft Exchange server. The problem can be caused by a corrupt cached copy of … Read more
When you start Outlook on a domain-joined PC, you may see the error message “AutoDiscover could not be reached.” This prevents Outlook from connecting to your Exchange or Microsoft 365 mailbox. The cause is usually a DNS misconfiguration, a firewall rule, or a corrupted Outlook profile. This article explains why the error occurs and provides … Read more
When you try to save or move an email, calendar appointment, or contact in Outlook, you see the error: “Item Cannot Be Saved. Object Has Been Deleted.” This error occurs because of a sync conflict between your local Outlook data file and the Exchange server or your IMAP/POP3 email provider. The item you are trying … Read more
When you try to open, move, or delete an email in Outlook, you may see the error message: “The action cannot be completed. The object has been deleted.” This error occurs because Outlook is trying to access an item that no longer exists in the current folder or mailbox. The item may have been moved, … Read more
When you open Microsoft Outlook, a splash screen appears with the message “Outlook Requires Connection to Mail Server.” This prevents Outlook from starting fully and stops you from accessing your email, calendar, and contacts. The error occurs because Outlook cannot establish a connection to your email server, either on-premises Exchange or Microsoft 365. This article … Read more
When you try to save or modify folder permissions in Outlook, error 0x80070005 stops the action and displays an access denied message. This error occurs because Outlook does not have the required write permissions to the mailbox folder or the underlying data file. The cause is often a registry permission issue, a corrupted profile, or … Read more
When you start Outlook, the error message “Cannot open your default email folders” can stop you from accessing your inbox, sent items, and calendar. This error usually occurs because the Outlook profile has become corrupted or contains invalid data. The profile stores your email account settings, cached data, and folder permissions. This article explains why … Read more