Error Code 800c0005 Windows Phone [portable] May 2026

If you own a legacy Windows Phone device (such as a Lumia running Windows Phone 8 or 8.1), you might have encountered the frustrating Error Code 800c0005 when trying to set up an email account, sync your contacts, or download updates. This error typically appears with a message like: "We're having trouble downloading your messages. Error code: 800c0005" or "Account settings are out of date."

| Setting | Value | |---------|-------| | Incoming server | imap.gmail.com | | Port | 993 | | Security type | SSL/TLS | | Outgoing server | smtp.gmail.com | | Port | 465 | | Security type | SSL/TLS | error code 800c0005 windows phone

In this guide, we’ll explain what causes error 800c0005 and provide step-by-step fixes to get your phone working again. Error 800c0005 is a security certificate or authentication error that occurs when your Windows Phone cannot establish a secure connection (SSL/TLS) with a mail server or update server. The phone’s built-in root certificates may be outdated, or the server now requires a newer encryption protocol that Windows Phone 8.x does not support. If you own a legacy Windows Phone device

If you manage to get your email working, remember that security patches are no longer issued. Avoid using your Windows Phone for sensitive financial or work-related communication. Did this article help you fix error 800c0005? Share your experience in the comments below! Error 800c0005 is a security certificate or authentication