Windows Live mail and my outlook.com account.

Unable to send or receive messages for the Live (---) account.

Server Error: 5102
Server: 'https://mail.services.live.com/DeltaSync_v2.0.0/Sync.aspx'
Windows Live Mail Error ID: 0x8DE00002

Happens all the time, but only with my outlook.com account. My @Hotmail and @live accounts work just fine.

[Original title: Fix, please. PII removed]