I want to synchronize my window 8.1 local drives data on my network shared folder whenever I connect to LAN. How it is possible? It should sync only lat

Here you will find more information about syncing files between different locations.

http://windows.microsoft.com/en-us/windows-vista/how-to-keep-your-information-in-sync

I would do the following in your case. I would copy folders the network share that need to be synchronized.

Then right-click the network folder and click Always available offline.

http://windows.microsoft.com/en-us/windows/working-with-network-files-offline#1TC=windows-7

Hi,

As mentioned by T. Kujala, you can use sync center\offline files to sync the files. I haven't found a way to only sync when connected to LAN, but you can refer to the following Offline File group policy settings which might do some help:

Computer Configuration\Administrative Templates\Network\Offline Files

Configure Background Sync

Configure slow-link speed

Enable file sychronization on costed network

(similiar in Windows 8.1 system)

https://technet.microsoft.com/en-in/library/ff633429%28v=ws.10%29.aspx?f=255&MSPPError=-2147217396