Problem
I used to write posts using Microsoft Word. After updating to WordPress 4.1 blogging was not possible anymore . In WordPress the settings for XML-RPC disappeared.
Solution
Microsoft is offering a free bundle of software called : Windows Essentials
http://windows.microsoft.com/de-ch/windows-live/essentials-other#essentials=overviewother
Install only Windows Live Writer from this bundle. It is better than Word for blogging as you can apply categories etc.
Info: to change the path where Live Writer saves your local documents add the following RegKey
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Windows Live\Writer]
“PostsDirectory”=”A:\\Cloud-Mix\\Posts”