Microsoft Outlook Error 0x800C8101 usually appears when attempting to configure or use Outlook with POP or IMAP accounts. The error typically means Outlook was unable to save the email account settings—often due to corrupt data files, incorrect account credentials, or interference from antivirus or firewall software.
Start by opening Outlook and navigating to File → Account Settings → Email Accounts. Double‑check your email address and server settings to ensure they exactly match the configuration provided by your email service. Pay special attention to port numbers and encryption settings (e.g., SSL/TLS).
If settings are confirmed correct but the error persists, close Outlook and disable your antivirus and firewall temporarily. This ensures security software isn’t blocking Outlook’s communication or preventing access to configuration files.
Next, run Outlook in Safe Mode by pressing Win + R, typing outlook.exe /safe, and pressing Enter. Safe Mode opens Outlook without add-ins, which helps determine whether a third‑party extension is causing the issue. If it works in Safe Mode, disable problematic add-ins via File → Options → Add‑ins, then restart Outlook normally.
To repair broken data files, go to Control Panel → Programs and Features, select your Microsoft Office installation, choose Change, and then run the Repair option. Alternatively, use the Inbox Repair Tool (scanpst.exe) to manually fix your Outlook data files.
If Error 0x800C8101 continues to appear, consult the full troubleshooting guide provided by WinChatSupport for detailed instructions. Live chat support is also available through the WinChatSupport homepage if you prefer real-time assistance.