With Windows 8 Enterprise, there is a common issue that I’ve been experiencing.  If you are unable to connect or browse a UNC or mapped network drive, then you may want to try this fix. This will show you how to fix windows 8 network drive issues on enterprise edition.  I believe the issue is with the local group policy and authentication protocols.

1. From the run command line (windows key + r) type gpedit.msc
2. Now browse this path… Local Computer Policy > Windows Settings > Security Settings > Local Policies > Security Options
3. Now Enablethe following Policies.
   1. Microsoft Network Client : Digitally Sign communications (always)
   2. Microsoft Network Client : Digitally Sign communications (if server agrees)
   3. Microsoft Network Client : Digitally Sign communications (if client agrees)

You should now be able to connect and browse the network drives on your windows 8 machine.

Also, remember to log off/restart the computer before confirming the fix.