We recently migrated from Exchange 2007 to 2013, the next step is to start using the archive feature available in 2013. However, one of the test users is presenting a problem, when I try to enable archiving I get this

Mailbox 'User Name' can't be archive-enabled because it has a managed folder mailbox policy assigned. Archives are supported only with a retention policy, the messaging records management (MRM) feature introduced in Exchange 2010.

We did not use Exchange 2010 at any point, so I don't understand where this could be coming from.

I found multiple articles talking about this in Exchange 201, and a number of responses saying run this

Set-Mailbox user -ManagedFolderMailboxPolicy $null

When I tried running it, I got this result

A parameter cannot be found that matches parameter name 'ManagedFolderMailboxPolicy'.
    + CategoryInfo          : InvalidArgument: (:) [Set-Mailbox], ParameterBindingException
    + FullyQualifiedErrorId : NamedParameterNotFound,Set-Mailbox
    + PSComputerName        : server.domain.com

Can anyone advise how I resolve this? I have a feeling I am going to come across this on multiple users...

Try:

Set-Mailbox <user> -RemoveManagedFolderAndPolicy $true

https://technet.microsoft.com/en-us/library/bb123981%28v=exchg.150%29.aspx

If it fails, drop the $true.  I haven't used this switch before, so I don't know off hand if it needs the value or not.

Set-Mailbox <user> -RemoveManagedFolderAndPolicy

worked, it did not like the $true version

Thank you