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Windows 7: Extremely slow file transfers and network access...

23 Mar 2010   #21
GregKeyser

Windows 7 Professional 64bit
 
 

After fighting this for a couple of hours, I finally found the magic solution for me. Since I hadn't seen it here, thought I'd share.

First, a bit about my configuration. I have 2 client machines and a Windows Home Server. One client machine was a new HP that has Win7 Professional, 64bit. The other client machine is a Dell with 32bit Vista on it. The Dell was working just fine. For some odd reason, file copies FROM the HP to any other machine on my network were PAINFULLY SLOW. Even odder, copies TO the HP machine were blazing fast. I first noticed this problem when I tried the initial backup of the HP machine to the Home Server. It was taking FOREVER and I didn't know why. Then, I tried a simple file copy from and that too was very slow.

SOLUTION: In the Advanced tab for my network adapter, I changed IPv4 Checksum Offload to Disabled.

Sigh. This was probably the 10th setting that I had tried (changing each back to its original value when there was no difference).

YMMV.

Greg


My System SpecsSystem Spec
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31 Aug 2010   #22
Shutitdotnet

Windows 7 Premium x64
 
 

Quote   Quote: Originally Posted by GregKeyser View Post
After fighting this for a couple of hours, I finally found the magic solution for me. Since I hadn't seen it here, thought I'd share.

First, a bit about my configuration. I have 2 client machines and a Windows Home Server. One client machine was a new HP that has Win7 Professional, 64bit. The other client machine is a Dell with 32bit Vista on it. The Dell was working just fine. For some odd reason, file copies FROM the HP to any other machine on my network were PAINFULLY SLOW. Even odder, copies TO the HP machine were blazing fast. I first noticed this problem when I tried the initial backup of the HP machine to the Home Server. It was taking FOREVER and I didn't know why. Then, I tried a simple file copy from and that too was very slow.

SOLUTION: In the Advanced tab for my network adapter, I changed IPv4 Checksum Offload to Disabled.

Sigh. This was probably the 10th setting that I had tried (changing each back to its original value when there was no difference).

YMMV.

Greg

I registered just to say thanks after trying everything else I could dig up on the internet about this specific issue, this is the only thing that worked for me from 250KB to 16Mb which I can live with ... man what a relief I've spent the better part of the day trying to figure this crap out....

Thanks again
My System SpecsSystem Spec
30 Nov 2010   #23
mattvogt

Windows 7 Enterprise x64
 
 

Quote   Quote: Originally Posted by GregKeyser View Post
After fighting this for a couple of hours, I finally found the magic solution for me. Since I hadn't seen it here, thought I'd share.

First, a bit about my configuration. I have 2 client machines and a Windows Home Server. One client machine was a new HP that has Win7 Professional, 64bit. The other client machine is a Dell with 32bit Vista on it. The Dell was working just fine. For some odd reason, file copies FROM the HP to any other machine on my network were PAINFULLY SLOW. Even odder, copies TO the HP machine were blazing fast. I first noticed this problem when I tried the initial backup of the HP machine to the Home Server. It was taking FOREVER and I didn't know why. Then, I tried a simple file copy from and that too was very slow.

SOLUTION: In the Advanced tab for my network adapter, I changed IPv4 Checksum Offload to Disabled.

Sigh. This was probably the 10th setting that I had tried (changing each back to its original value when there was no difference).

YMMV.

Greg
I also just registered to say that this was the only thing that helped me, too.
Specifically I have a Realtek PCIe Gigabit adapter that had TCP Checksum Offload IPv4 set to "Rx and Tx Enabled". Tried both Rx Enabled and Tx Enabled independently and disabling both is the only thing that worked.

Thanks!
My System SpecsSystem Spec
.

06 Dec 2010   #24
kingofbytes

Windows 7 x64
 
 
More detailed answer for Nvidia boards and W7 x64

Thanks!

This worked for me but it wasn't the whole solution.

I had an Nvidia board and needed the latest driver. The built in Windows 7 driver was not good enough. Next, I had to disable all the silly Microsoft "improvements:
C:\Windows\System32>netsh int tcp show global
Querying active state...

TCP Global Parameters
----------------------------------------------
Receive-Side Scaling State : disabled
Chimney Offload State : disabled
NetDMA State : disabled
Direct Cache Acess (DCA) : disabled
Receive Window Auto-Tuning Level : disabled
Add-On Congestion Control Provider : none
ECN Capability : disabled
RFC 1323 Timestamps : disabled
** The above autotuninglevel setting is the result of Windows Scaling heuristics
overriding any local/policy configuration on at least one profile.

Then, once that was done, I had to make sure that Flow Control was Receive Enabled.

Then once that was done, I could change your setting regarding IPv4 Checksum Offloading Enabled to DISABLED.

Oh, and I'm not sure it matters but I've got IPv6 disabled across the board
.

What a PITA! But thanks for the last piece to the puzzle!

Quote   Quote: Originally Posted by GregKeyser View Post
After fighting this for a couple of hours, I finally found the magic solution for me. Since I hadn't seen it here, thought I'd share.
...................

SOLUTION: In the Advanced tab for my network adapter, I changed IPv4 Checksum Offload to Disabled.

Sigh. This was probably the 10th setting that I had tried (changing each back to its original value when there was no difference).

YMMV.

Greg
My System SpecsSystem Spec
08 Jun 2011   #25
Steiff

Windows 7 Ultimate x64
 
 
Thankyouthankyou

Quote   Quote: Originally Posted by GregKeyser View Post
After fighting this for a couple of hours, I finally found the magic solution for me. Since I hadn't seen it here, thought I'd share.

First, a bit about my configuration. I have 2 client machines and a Windows Home Server. One client machine was a new HP that has Win7 Professional, 64bit. The other client machine is a Dell with 32bit Vista on it. The Dell was working just fine. For some odd reason, file copies FROM the HP to any other machine on my network were PAINFULLY SLOW. Even odder, copies TO the HP machine were blazing fast. I first noticed this problem when I tried the initial backup of the HP machine to the Home Server. It was taking FOREVER and I didn't know why. Then, I tried a simple file copy from and that too was very slow.

SOLUTION: In the Advanced tab for my network adapter, I changed IPv4 Checksum Offload to Disabled.

Sigh. This was probably the 10th setting that I had tried (changing each back to its original value when there was no difference).

YMMV.

Greg
I know this is an old thread, but I thought it was worth registering to say thanks.

This worked a dream for me!!!
I just upgraded a machine from Ubuntu to Windows 7 as I only use the machine to stream films/TV to another PC in the house using XBMC (and occasionally use it as an ftp server).

Having spent all the time installing and transferring 1TB of stuff onto the new set up with Windows 7 I could have cried when I saw the word "Buffering" only 30 seconds into a new film; esspecially as samba streaming from my Ubuntu set up ran without a hitch.

So Thanks! and hopefully I've just added a few keywords for anyone else googling the same issue.
My System SpecsSystem Spec
09 Jun 2011   #26
nistsio

Windows 7 Ultimate 64-Bit
 
 

Hello.

I will test the above solution as soon as I get my hands on my laptop.

The only question I have is on which machine should I change this setting of the network adaptor? On the one having Windows 7 or the other that is trying to copy from Windows 7?

Regards.
My System SpecsSystem Spec
13 Jun 2011   #27
nistsio

Windows 7 Ultimate 64-Bit
 
 

My System SpecsSystem Spec
22 Jun 2011   #28
GregKeyser

Windows 7 Professional 64bit
 
 
To all those that thanked me...

You are welcome! I originally spent so much time trying to root cause this problem that I subscribed to this thread to see how many other people ran into the same issue. It's been nice over the months to see the "Thank you" replies trickle in.
My System SpecsSystem Spec
01 Jul 2011   #29
OldNick

Windows 7 Home Premium 32bit
 
 

I give up. I just cannot believe that there are so many steps just to get this stupid stuff to work. I read query after query, with increasingly complex and hacky replies, just to (a) get the stupid network working (I can't BELIEVE how many different ways you have to get to do things that should be under one banner) (b) then try to make it work remotely properly.

Sorry. I came here looking for ideas and it's just left me feeling I am happier to simply use a usb drive and walk.

This seems to be utter nonsense and I feel M$oft should be ashamed of themselves.
My System SpecsSystem Spec
25 Sep 2011   #30
mediaman09

DELL Win 7 Home Premium 64 Bit
 
 

I am still suffering with terribly slow netorks speeds, to the point where I really cannot transfer anything other than one file at a time. Hopelessly slow.

I have tried may many 'suggestions' on the know Windows 7 issue - nothing works.

Was very execited to read of " changed IPv4 Checksum Offload to Disabled. "... but could not find that option anywhere. Is it only applicable to certain network cards???
My System SpecsSystem Spec
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 Extremely slow file transfers and network access...




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