I did some changes of implementing Routing group connectors in our 16 sites .Now some public folders which are in the hub site are not accessible from any of our remote sites.Any way the routing group connectors are deleted because of email disruption.I can access the public folders.
The error that we get is :
"Unable to display the folder. The folder cannot be opened because there is a configuration problem on the server. Contact the microsoft exchange system admin.."