I recently purchased and installed an Intel Gigabit CT Desktop Adapter (PCI-E, 1x channel) in my desktop machine. The problem I'm having is with downloading files of any substantial size (say, above 2 MB). For example, when using IE11, the download message says "download was interrupted" or "file was interrupted" - and multiple retries never succeeds.
When I temporarily enable a wireless adapter (and disable the intel CT connection) on the desktop, the file downloads just fine. For other reasons, the wireless adapter is not a long term solution - which is why I purchased the wired CT desktop adapter.
Drivers are up-to-date: (Intel, 5/26/2015, 12.7.28.0) - In fact, I had to download the driver package from Intel using the wireless connection because of the problems mentioned above with using the CT adapter.
Also - when running the hardware diagnostics, the loopback test fails - all others pass.
Is this a hardware issue?
Thanks!
Link Copied
Ah - should have mentioned - running Windows 7 Pro 64-bit
From elevated command line (run as administrator) enter netsh int tcp show global , show us result
Here's what I get:
D:\Windows\system32>netsh int tcp show global
Querying active state...
TCP Global Parameters
----------------------------------------------
Receive-Side Scaling State : enabled
Chimney Offload State : automatic
NetDMA State : enabled
Direct Cache Acess (DCA) : disabled
Receive Window Auto-Tuning Level : normal
Add-On Congestion Control Provider : none
ECN Capability : disabled
RFC 1323 Timestamps : enabled
** The above autotuninglevel setting is the result of Windows Scaling heuristics
overriding any local/policy configuration on at least one profile.
netsh int tcp set global rss=disabled
netsh int tcp set global chimney=disabled
netsh int tcp set global netdma=disabled
Then reboot PC and try.
Unfortunately, same behavior.
Just to verify, here are the settings after the recommended changes and a reboot:
D:\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 : normal
Add-On Congestion Control Provider : none
ECN Capability : disabled
RFC 1323 Timestamps : enabled
** The above autotuninglevel setting is the result of Windows Scaling heuristics
overriding any local/policy configuration on at least one profile.
Please provide screenshoot of 'Advanced' properties tab of NIC properties in device manager.
New info: after a few days of debugging, here's what I've learned:
Hoping these clues leads someone to a possible cause (and fix!).
Thx
Its look like trouble is in border router. Try to connect directly to provider outlet, if possible, switching off router for an hour (to cool and reboot) is also a good idea.
For more complete information about compiler optimizations, see our Optimization Notice.