Windows 7 downloads stop

I have several PCs on my home network, some with Windows 7 (64  bit) and some with Windows XP SP3. The problem is when I try to download a file on the Windows 7 PCs, the download always halts (usuallly at 10 - 15 %) before completion and eventually times out. The same download works fine consistently with the XP PCs. I have tried disabling UAC and also disabling the Windows firewall to no avail. Any help appreciated.
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JohnConnect With a Mentor Business Consultant (Owner)Commented:
Another angle to consider is your router. It is feasible that the Windows 7 machine is not compatible with. I had to replace my wireless router when I purchased my Vista machine.

You can try upgrading the firmware in your router, and you can also try removing your router (temporarily) and connecting your Windows 7 machine directly to the router to see if that changes anything.

... Thinkpads_User
JohnBusiness Consultant (Owner)Commented:
I have Windows 7 Pro 64-bit running here and do not experience that problem.

1. Make sure Windows is completely up-to-date.
2. Right click on Network and -> Properties. In the window that opens, on the left, click on Change Advanced Sharing Settings and review the settings in there. Use the Home and Work settings and make sure things like Network discovery are turned on. Most things in here can be enabled. I have media streaming turned off.
3. From a hardware perspective, consider updating the wired or wireless driver or both.
4. If the failing connection above is wireless, try wired and see what happens.
5. Do you have another security suite (and therefore another firewall besides Windows).
... Thinkpads_User
pumrigarAuthor Commented:
1. Windows is up to date.
2.Done. Note that the download does occur. It just never completes.
3. NIC drivers are the latest.
4. Desktop PCs only wired.
5. I use Norton Internet Security but the problem occurs even without it installed.
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JohnBusiness Consultant (Owner)Commented:
I don't know of any more obvious problems. The last time I had this problem (many years ago) it was an ISP problem. So:

1. Consider your ISP and whether they can assist.
2. Look at the MTU on your router/modem. If you are using DSL as your broadband connection, the MTU should be 1492 (possibly a bit less) whereas default is almost always 1500.
3. Consider malware as it can get in the way like this.
4. Have you installed incompatible software? I had to replace almost all my software when I moved to Vista 64-bit 18 months ago.

I understand that 1 and 2 are network issues and your other machines are working OK, but at least review them. Also, Windows 7 (and Vista) introduces IPv6 whereas your XP machines are likely limited to IPv4. You might consider temporarily disabling IPv6, but I have never had to do that.

.... Thinkpads_User
NikSystems SpecialistCommented:
I just dislike Norton products as they cause much to trouble.
Try to uninstall it with Norton removal tool.

Do you have any other protection software installed.

Can you type:

Run | msconfig | Enter

Disable all non Microsoft services and startup items. Restart and see if this problem remains?

Also, which software are you using for download?
Leave Norton alone (that's the best AV around) ...
Does your issue apply to 'every' file you try to download (even from different sources) ???
Are you using Internet Explorer to download the files (or something else) ?
pumrigarAuthor Commented:
Thanks for all the comments. I looked at the router and that was the problem. I have a Sonicwall TZ 180 which includes hardware based antivirus, ip etc. When I temporarily disabled the security services the download completed fine so now I have a work around. I have Norton on the PC ayway. Dont know why this affects Windows 7 PCs only.
JohnBusiness Consultant (Owner)Commented:
Thank you, and thanks for the update. I now have my Windows 7 Pro machine in production and my new(ish) router is working happily with it. .. Thinkpads_User
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