Hi We use a common folder which is shared on the network. We have mapped it to every computer as L: drive. No single user out of 180 users facing any issue..but one. This user has windows 7 professional 64 bit laptop. We have several other similar systems. Whenever this person opens L: drive, the explorer window starts showing a blue circle with not responding message on top. after 15-20 min, it will open up. He can access internet, network printers during this period without any issue. So he has good connectivity to office network. Other users with Windows 7 professional 64 and windows XP professional 32 are accessing same location without any kind of issue. What may be the reason for this not responding Network drive?