Do not install the Windows Management Framework 3.0 (KB2506143) on SharePoint 2010 Servers

The Windows Management Framework 3.0 (KB2506143) includes PowerShell 3.0. Because SharePoint 2010 is based off of the .NET 3.5 Framework, it is incompatible with PowerShell 3.0, which is based off of the .NET 4.0 Framework. Installing this Optional update from Microsoft Update or the Microsoft Download Center will cause the SharePoint Management Shell to throw an error:

Uninstalling and rebooting the SharePoint Server will resolve this issue.

WMF 3.0 is also incompatible with Exchange 2007 and 2010, as well as some System Center products.

EDIT: The PowerShell team has put together a list of products with known compatibility issues as well as temporarily removed the WMF 3.0 from Windows Update:

About Krishana Kumar

Krishana Kumar is SharePoint Architect/Trainer having Architecture experience with high volumes at Enterprise level and global scale - creation of highly scalable solutions with global user base and geographically distributed architectural components. Good knowledge of SharePoint best practices and governance models. I hold Two Master degree in Computer Science with over 11 years of experience working on Microsoft Technologies specially SharePoint, Project, .NET and other Information Worker Technologies. Having good exposer in Client side scripting Angular.js, backbone and Node. I am currently responsible for SharePoint Infrastructure set up and leading teams in various medium and large scale projects, architecting, designing & installing SharePoint farms, developing custom components,, and providing advanced SharePoint administration and development training to teams and customers. I regularly speaks in various SharePoint User Groups and other Events. I have MCSA Windows Azure, MCSA Office 365, MCSE & MCSD SharePoint 2013, Microsoft Certified Developer (MCD) and holds MCPD, MCTIP and MCTS for SharePoint 2010, MCTS MOSS 2007 & WSS 3.0, MCPD, MCITP (EPM 2010 & 2007) and MCSD .NET.
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