Mukut_02 :
my cookies folder suddenly vanished .. Is it good for my pc or not. & if it is not good for my pc , kindly suggest me the way to recover it
If you did not intentionally delete it, run disk cleanup, or some 3rd party Tuneup application to delete internet files, then IMO, it is not good, and I would start anti virus anti malware scans to see if you have picked up an infection. You can also try a Windows system restore to a date prior to the disappearance of the folder(s).