The File and Printer Sharing setting in my LAN adapter is being turned off when I reboot. Why? What might be responsible for this?

I set File and Printer Sharing for Microsoft Networks to ON in my LAN adapter properties. When I reboot it has turned itself off.

My PC runs Windows 7 64bit.
With File & Printer Sharing on, I am able to access folders on another Windows 7 32bit PC and that PC can access mine. After a reboot of my PC, neither is possible - file & printer sharing has turned itself off in the adapter properties on my PC (The other PC is still OK.)

In Control panel / Advanced Sharing Settings I also have the file and printer sharing option specified - and that stays on across a reboot. But it appears it is not sufficient to allow these two PCs to see each other.

When I turn File & Printer sharing back on in the adapter properties, both PCs can then see each other (no reboot necessary).

On the other PC, file & printer sharing survives across a reboot without being reset.

I withdrew both PCs from our homegroup last night in an attempt to narrow down where the problem lies.
My PC is using the standard Windows firewall t present.

This is one aspect of various strange problems I have been "enjoying" with Windows 7.  Following suggestions from other forums I have turned off jiumbo packets and have created an identical logon id on both systems. The Intel web site confirms I have the up-to-date Intel network card driver.

This is very strange. Any suggestions will be much appreciated.

Question Info

Last updated March 24, 2018 Views 1,266 Applies to:
I think I have found the cause of the problem.
This is a Lenovo Thinkpad and it comes with "Access Connections", software to assist in managing network connections.
Buried deep in the settings is a security option to turn off File and Printer Sharing.  I have disabled that and will test by rebooting later on.

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