http://www.infoworld.com/article/3067121/email/microsoft-to-windows-live-mail-2012-users-switch-now.html
https://www.thurrott.com/cloud/microsoft-consumer-services/outlook/66990/windows-live-mail-2012-will-not-work-new-outlook-com
Windows Live Mail supports POP, IMAP, SMTP, and Deltasync e-mail
protocols. Microsoft is dropping Deltasync and replacing it with EAS
(Exchange ActiveSync). See:
https://en.wikipedia.org/wiki/DeltaSync (defunct)
https://en.wikipedia.org/wiki/Exchange_ActiveSync (MS focuses on this)
Actually EAS has been available for awhile. Microsoft decided to drop
Deltasync and reduce their resources and manpower alloted to that
proprietary protocol and go forward with EAS (and POP, IMAP, and SMTP).
WLM doesn't support EAS. Microsoft pushed out an update to add EAS to
WLM but it caused lots of problems so they yanked it. See:
http://www.infoworld.com/article/3014510/microsoft-windows/avoid-windows-live-mail-2012-patch-kb-3093594-it-freezes-windows.html
Because WLM is a legacy product (meaning no support) and because they
are dropping Deltasync support means WLM can no longer use Deltasync to
access Microsoft's e-mail servers. Your choices are:
- In WLM, use POP or IMAP to receive and SMTP to send. Create new
accounts in WLM to use POP or IMAP and delete the Deltasync account in
WLM. If you have user-defined folders in your Outlook.com account,
IMAP will let you access those from the client.
- Switch to an e-mail client that supports EAS, like MS Outlook. See
https://en.wikipedia.org/wiki/Comparison_of_Exchange_ActiveSync_clients
for a list of some other EAS clients/services.
Despite old software that itself works okay, it is relies on proprietary
protocols then that software is susceptible to the whims of whomever
develops that proprietary protocol. For WebDAV replaced by Deltasync
which gets replaced by EAS, you're captive to Microsoft's whims. Yes,
you supposedly get more features but Microsoft giveth and taketh.
Outlook Express is still usable. WLM is still usable as long as you use
standard e-mail protocols (not Microsoft's proprietary ones). Those are
obviously long expired e-mail clients but the standard e-mail protocols
have not expired so those old clients still work.
If you want to use Microsoft's proprietary e-mail protocols then you
have to move along with Microsoft. Deltasync has been replaced by EAS.
If you continue to use WLM, and because Deltasync is (will be) dead, and
because standard e-mail protocols are only dealing with e-mail (not
contacts or calendars) then you'll have to use your web browser to get
at your contacts up in your Outlook.com account. Time to start moving
those contacts from online to the Contacts feature inside the local
e-mail client. Same for calendaring. While Outlook.com lets you import
contacts from a file (that you exported from a local client), I don't
see a means of exporting a list of contacts from Outlook.com (to then
import into a local e-mail client). So you're stuck with having to
manually copy your contacts from Outlook.com to the Contacts list inside
of WLM (the local contacts lists, not the sync'ed one you see when you
have WLM log into your Outlook.com account).