File Sharing Encryption settings in Windows 8 allows you to encrypt connections so that file sharing in between computers can be done at minimum risk. There are some computers that are adaptable to 128-bit encryption, whereas others are adaptable to only 256-bit encryption. If you want to change these settings in Windows 8, here is what you need to do:
1. Right click on the bottom right, next to the clock, the networking icon and select Open Network and Sharing Center
2. Click change advanced settings on the top left
3. Now expand All networks by clicking the top arrow. Go down and you would see two options under File sharing connections. For 128-bit, choose Use 128-bit encryption to help protect file sharing connections (recommended) and for 40 or 56-bit, chose Enable file sharing for devices that use 40- or 56-bit encryption. Now click Save Changes once done.