We're running a SharePoint Server 2010 in windows 2008 server. Earlier we use to map SharePoint site to a drive and access the files. For the past few days we're unable to map the drive or access through unc. But we are able to access the site through internet explorer. Do we need to change the configurations to access the SharePoint site through unc or map drive? Please suggest!
SharePoint has it's own implementation of WEBDAV - you don't need that enabled on your IIS server. Also you need to ensure the clients have the webclient service started.
To rule out networking across devices, I would attempt to access this from another server (may require installing desktop experience feature to get webclient service installed) - if it works here, then you will need to investigate the network connection between your clients and server - you may have an application firewall or similar inspecting and blocking this type of traffic.