sbcglobal error - Microsoft Community

when accessing sbcglobal.net email via lumia 640 phone, sbcglobal error saying there problem certificate smtp.mail.att.net:465:1. displays error code: 80072f89. after hit close button, goes mail.

this can worse, want know how fix it.

hi victor,

we suggest phone , perform hard reset. hard reset phone, go settings > system > about > reset phone.

hard reset windows phone return same state in first time turned on. personal content erased, , phone restored factory settings.

please create backup before performing hard reset phone memory wiped out. creating backup, click stuff.

regards.

Mobile Devices / Microsoft Lumia and Nokia Lumia / 600-series