Facing Microsoft Outlook Error 0x800ccc97 while sending or receiving emails can interrupt daily communication and affect mailbox access. This error usually appears due to damaged PST files, unstable internet connections, incorrect mail server settings, or Outlook synchronization problems. Many users also notice Outlook freezing, delayed email delivery, or sudden crashes along with the error. Checking account settings, repairing mailbox data, clearing oversized folders, and updating Outlook often helps resolve the issue. If the problem continues, using an advanced Outlook PST Repair Tool can help recover corrupted PST files and restore smooth email functionality without affecting mailbox data.