Micrososft Account/Outlook.com/Hotmail sync error 85010014 on windows phone 8.1

After having some Internet Connection issues with my Wi-Fi at home, my Microsoft Account on Windows Phone 8.1 Lumia 920 stopped synchronizing with the Server, showing error code 85010014.


How-I-fixed-it:
I did a soft reset on my Lumia 920 as described here by pressing the volume down and power on button for at least 10 seconds until the phone reboots.
After the reboot, the Microsoft Account sync with the outlook.com server worked fine again.

Windows Phone 8.1 ActiveSync Error 86000106 with Open-XChange groupware

My Windows Phone 8 OS-Version: 8.10.12397.895 startet to throw error 86000106 when syncing with my company's Open-XChange groupware server.

Found similar issues described in a forum, but that did not help for me:

http://answers.microsoft.com/de-de/winphone/forum/wp8-wpemail/fehler-bei-active-sync-fehler-86000106/a69fb145-29d2-4c12-8730-7ecbd389787e?rtAction=1404212848646

https://mailbox.org/windows-phone-8-1-fehlermeldung-beim-synchronisieren/

The fixes suggested to change sync interval from "based on usage" to "manual".

How-I-fixed-it:
I deleted the particular Exchange ActiveSync Account on my phone and added it again. The account syncs OK since this.

Cannot create a new contact group (button is gray/disabled) in Outlook 2013 using my outlook.com account and Exchange ActiveSync EAS

I recently switched from Outlook 2010 to Outlook 2013 and also started to used the online version of Outlook.com. I moved my contacts to the new account.
But when i tried to create a new contact group, i couldn't, because the button was grayed out.
I did some search in the web on this issue an seems like there's no real "solution" to get this working because the Exchange ActiveSync protocol that is used between Outlook 2013 and Outlook.com does not support contact groups according to: http://answers.microsoft.com/en-us/office/forum/office_2013_release-outlook/contact-group-gray/da54e419-9c18-4d3b-9045-052ca1c90760

But at least I found out, that it's still possible to create contact groups in Outlook.com online and that the group name becomes a category of this contact in Outlook 2013. Displaying the contacts grouped by category and sending an email to such a group has a similar effect as using a contact group, although I would be much happier if the EAS would support contact groups by nature.

Here's a description how the group/category-thing works:
http://www.msoutlook.info/question/759

Unfortunately it does not work the other way round. Assigning a category in to a contact in Outlook 2013 does not sync back to Outlook.com nor creating a group for These contacts :-(