[kbrady10000]

Here is my brain teaser:
One machine on my home LAN uploads files to other computers very slowly although the same file transfer originated from the other computer proceeds normally.
Fundamentally there are four computers. Three run Windows 7 64-bit professional or ultimate. The fourth runs Windows XP service pack three.
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Zotac Windows 7
Mediacenter Windows 7
Deb Windows 7
Ben Dell -Windows XP

All of the computers have one gigabyte ethernet circuitry and the switch is one gigabyte. I have used the same 1 GB file to to the testing using the straightforward Windows Explorer copy and paste functions.
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The computer named "Zotac" is a machine which seems to upload very slowly.
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Listed below are file transfer times between the C drives of the one gigabyte file. As you can see the same file transfer differs depending on which machine originates it
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From Zotac to Mediacenter
uploaded from Zotac-seven hours
downloaded from Mediacenter -10 seconds
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From Zotac to Deb Windows 7
uploaded from Zotac-seven hours
downloaded from Deb Windows 7-10 seconds!
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The Zotac machine seems to be able to upload to the Windows XP machine properly however. Interestingly the same file transfer originated from the Windows XP machine proceeds somewhat more slowly
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From Zotac to Ben Dell-Windows XP
uploaded from Zotac 2 min.
downloaded from Bendell -15 min..

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Because the same problematic slow file uploads from machine "Zotac" occur properly when originated from other machines I have to assume that the hard drive read write functions as well as the network infrastructure are operating correctly. There are no video streaming or other file transfers occurring on the network.
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Any recommendations or tips much appreciated. Thank you in advance Kevin]

 

[Wand3r3r]

running antivirus? Perhaps its set to examine all packets.

 

[kbrady10000]

Excellent.

That was it. I am using Windows Security Essentials as well as Malwarebytes-registered. Disabling real-time monitoring in WSE on both machines corrected the problem. I did not have to tinker with Malware Bytes. Interestingly enough once I did this I reactivated real-time monitoring: on both machines and the problem did not return. Not sure why. Yes Windows Security Essentials does have more granular control over real-time monitoring including specifications regarding incoming and outgoing files if needed. But somehow just switching these functions off and on corrected the problem. Multiple reboots of both machines had not

Very much appreciated. Thank you. Kevin

 

[kbrady10000]

The difficulty has returnedI am not sure why. This may have returned after a reboot. As stated above I temporarily disabled all real-time checking in Microsoft Security Essentials and then even with the turned back on the file transfers seem to be going normally. Have to reboot however they have slowed way down again. I turned off the virus scanning but this did not help rebooting the router did not help. Can anyone see what I am missing? Any help or tips appreciated in advance. Thank you. Kevin

 

[2xg]

Hello,

Have you tried removing MSE completely?

I'm also assisting you at at another Forum with the same issue as you are aware of by now.

btw...this is confusing for us.