SharePoint – Item has already been added error

The error “Item has already been added. Key in dictionary: ‘domain\account’ Key being added: ‘domain\account'” was preventing access to the configure managed accounts and configure service account menu’s within Central Administration, Security, General Security.

The solution is to remove one managed account using PowerShell.

$managedaccount = get-spmanagedaccount -identity “domain\user”
remove-spmanagedaccount $managedaccount[0]
This will remove the extra managed account.
You may have to log out and log in again. Also recycle the application pool associated with that managed account.

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Microsoft SharePoint 2013 training

Core Solutions of Microsoft SharePoint 2013

MOC 20331B official course
http://www.microsoft.com/learning/en-us/course.aspx?id=20331b

This is a great course and I would thoroughly recommend it if you are looking to implement SharePoint 2013 or have already deployed it.

I did this course at QA, International House, London. The facilities were fantastic with lots of lunch venues within 5 mins away.

I have to mention the course trainer Richard Keep http://uk.linkedin.com/pub/richard-keep/22/688/856, who is one of the best trainers I have ever experienced. He has an in depth knowledge of a variety of IT platforms and solutions and delivered the course in such a way that enabled me to learn and understand whilst enjoying the material and having fun.