Weak event created

Problem

In windows failover cluster manager, clicking on an node in the tree will raise the following error:

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This is one of the biggest error messages I have ever seen in a Microsoft product, that is, regarding the size of the message box Smilefjes. The error states: “A weak event was created and I lives on the wrong object, there is a very high chance this will fail, pleas review your code to prevent the issue” and goes on with a .net call stack.

Analysis

This feels like a .Net framework issue to me, and a quick search rustled up the following post on Technet: http://blogs.technet.com/b/askcore/archive/2013/01/14/error-in-failover-cluster-manager-after-install-of-kb2750149.aspx, stating that this is a bug caused by KB 2750149.

Solution

Install KB2803748, available here: http://support.microsoft.com/kb/2803748

To check if both or any of the patches are installed, run the following powershell commands:

Get-HotFix -id KB2750149
Get-HotFix -id KB2803748

Author: DizzyBadger

SQL Server DBA, Cluster expert, Principal Analyst

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