Network Drops Mid-Transfer of Files - Win 7 64 bit

[incurablegeek]

I have been wrestling with this night and day. Here are the specifics of my system:

1) Win 7 Ultimate 64 bit
2) Gigabyte motherboard with on-board LAN
3) D-Link DGL 4100 router - Configured properly with both computers showing IP's (DCHP) and MAC addresses

A) Printers recognized by both the Quad and the 6-core computers.
B) Internet connected, on and accessible from both computers
C) Cisco NetworkMagic and Win 7  both report Network and Internet Access (lower right corner of screen)
D) Occasionally (key word) both computers are mutually visible to each other - and then suddenly not visible
E) Occasionally directories are visible to/from both computers - and then suddenly not visible
F) File sharing so opened up that a groundhog in the next county could access anything
G) Internet slowed to a virtual crawl

Possible Reasons?
1) ESET Smart Security
2) MSE
3) MalwareBytes
4) BitTorrent

That's all I use for protection (computer protection that is).

So that's it. No reliable network, file sharing or file transfer possible. Help please. 

Thanks,

IncurableGeek

[DMHolt57]

Check that the NIC card is not set to power saving, not allowed to sleep.  If you have bittorrent going and you are seeding, you will have slugish network performance also... 

[javajolt]

It appears you have 2 Security Suites running at the same time, this can and usually does present conflicts.

1) ESET Smart Security
2) MSE

[incurablegeek]

"Back to basics" -

1) Re-did the Workgroup setup procedure per http://windows.microsoft.com/en-US/windows-vista/Join-or-create-a-workgroup
--- Every setting checked and double checked
2) Deleted/Uninstalled MSE - Now only have MSE AV/Firewall
3) D-Link DGL-4100 Gamer Router configured properly.
4) Still have BitTorrent installed and running - just no downloading or seeding at the moment

True: Network does disconnect when Computers empty sleep mode, but then nicely reconnects when awakened. Per DMHolt57's suggestion, NIC on 6-core not allowed to power save/sleep; only the 4-core does but see no reason to change that now because all testing is done when both computers are awake.

Now, completely out of the blue (not BSOD) the 4-core is visible again in Explorer. Click on it and am told to Diagnose. Diagnose says it cannot find the 4-core. And everybody wants to know why the Duck is upset! 

I know my refusal to use HomeGroup has offended some; not my intention nor is it my intention to turn this simple request into a reasons why to/not to use HomeGroup. So for me, it's a non-issue. I wish to set up WorkGroup and actually hear that it can be done.

Hey, c'mon guys. Remember MS made networking easy for us! 

[incurablegeek]

Hoping to help a few others get past MS' solipsist thought, here is an update:

1) Disabled ESET - Big Help
2) Disabled/Enabled Win Firewall - No difference
3) LAN Configuration - Took Out ESET; Added IPv6

Result:
1) Now 6-Core can see Quad-Core
2) Successfully transferred important files (so I can work at least) from "Documents" after copying them from the H directory of the Quad-Core to "Documents" on Quad-Core (real damned progress, going via one's kneecap to get from the shoulder to the hand!) - THIS TIME, THOUGH, FILE TRANSFER DID NOT STALL.

Existing Problems:
1) Quad-Core cannot see 6-core via Explorer but is on the Network Map (go figure)
2) I still cannot transfer files from viewed partitions on Quad-Core to 6-Core without moving them first to Documents on the Quad; I am told I "Do Not Have Permission From My Adminstrator (I am the damned Administrator!) - "Permissions" granted to ALL w/out restriction.

Movement From 6-core to Quad not possible at all - of course.

A small victory but still not there yet - even to circa 1995 modernism. 

Quick Question: Why do the Smily's on out site really, really suck so bad?  Just a question, OK.