Hi,

We are in progress of moving mailbox from Exchange 2010 to Exchange 2013. we are facing issue that Exchange 2013 mailbox users are unable to see public folders from Exchange 2010. after investigation found that proxy will not work for public folder redirection. 

Can you please suggest how i can make my exchange 2013 users to access exchange 2010? if this is not possible how i can migrate the public folders quickly with minimum down time.

any help would be much appreciated.

Take a look at this blog post.  It covers everything you need to know about coexistence with Public Folders.

http://blogs.technet.com/b/exchange/archive/2014/11/07/on-premises-legacy-public-folder-coexistence-for-exchange-2013-cumulative-update-7-and-beyond.aspx

Hi,

Configure legacy public folders where user mailboxes are on Exchange 2013 servers

https://technet.microsoft.com/en-us/library/dn690134(v=exchg.150).aspx

To migrate the public folders, you can refer to this document:

https://technet.microsoft.com/en-us/library/dn912663(v=exchg.150).aspx

Best Regards.