Unable to map master page gallery as network drive for migrated sitecollection

Hi all,

I am unable to map the masterpage gallery as network drive for design manager for a migrated site.
This is a windows 2008 server r2 OS. Desktop experience in installed.
I am able to map the master page gallery as network drive for two other site collections which is not migrated.
But for the current migrated sitecollection, it throws the familiar error that it is unable to connect.... I already tried unistalling and reinstalling desktop experience.
Kindly help.