List of WinRM related hotfixes for post RTM for Windows 8.1 and Windows Server 2012 R2.

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Applies to:
Windows Server 2012 R2
Windows 8.1

Note:  You should check https://support.microsoft.com for the latest version of the different files.
Note 2:  These are not available in Windows Update.

Note 3:  You can download them without entering your e-mail address and captcha if you are a Microsoft Premier customer and have a https://Premier.Microsoft.com account.

Note 4:  Carefully review the list and decide which might be applicable to your unique environment.

Note 5:  Test in your test and your quality assurance environment.

Note 6: Windows Hotfixes and Updates - How do they work?
https://blogs.msdn.com/b/ntdebugging/archive/2008/10/21/windows-hotfixes-and-updates-how-do-they-work.aspx

Note 7: How to Forcibly Install the LDR Branch from a Particular Hotfix Package
https://social.technet.microsoft.com/wiki/contents/articles/3323.how-to-forcibly-install-the-ldr-branch-from-a-particular-hotfix-package.aspx

Note 8:  To learn more about OS Patching Guidance for Window 8.x and Windows Server 2012 x, check out my peer Robert Smith's blog post:
OS Patching Guidance for Windows 8.x and Windows Server 2012 R.x
https://blogs.technet.com/b/robertsmith/archive/2014/09/28/os-patching-guidance-for-windows-8-x-and-windows-server-2012-r-x.aspx

Note 9:  Remember Update Rollups are not cumulative, so later updates do not necessarily have fixes from previous updates.  My peer Steve Mathias wrote a nice blog post here:
Update Rollups For Windows Server 2012 and Windows 8 Explained
https://blogs.technet.com/b/askpfeplat/archive/2013/05/13/update-rollups-for-windows-server-2012-and-windows-8-explained.aspx

Note 10:  Most of these are not a part of the Windows 8.1 or Windows Server 2012 R2 update rollups.  My peer Chad Schultz has a nice list here of the rollup updates:
Current Windows Server 2012 / R2 & Windows 8 / 8.1 Update Rollups
https://blogs.technet.com/b/chad/archive/2015/01/21/current-windows-server-2012-r2-amp-windows-8-8-1-update-rollups.aspx

List of WinRM related hotfixes post RTM for Windows 8.1 and Windows Server 2012 R2 as of Apr. 2015:

Originally published:  Apr. 2015.   Updated Apr. 2015.

2985459 The W3wp.exe process has high CPU usage when you run PowerShell commands for Exchange
https://support.microsoft.com/kb/2985459
Update(s):
Winrm.cmd   
Winrm.vbs   
Wsmagent.dll    6.2.9200.16384
Wsmagent.mof   
Wsmagentuninstall.mof   
Wsmanconfig_schema.xml   
Wsmanhttpconfig.exe    6.2.9200.16384
Wsmanmigrationplugin.dll    6.2.9200.16384
Wsmauto.dll    6.2.9200.16384
Wsmauto.mof   
Wsmplpxy.dll    6.2.9200.16384
Wsmprovhost.exe    6.2.9200.16384
Wsmpty.xsl   
Wsmres.dll    6.2.9200.16384
Wsmsvc.dll    6.2.9200.21178
Wsmtxt.xsl   
Wsmwmipl.dll    6.2.9200.21178

Supersede(s):
2974313 A domain controller freezes when an event subscription manager list is long in Windows
2969050 Windows Management Framework 5.0 Preview September 2014