Windows 10: An Update on Windows TCP AutoTuningLevel

Some of the confusion may have originated from a misinterpretation of a blog post which suggests disabling heuristics with the following command:

Code: netsh interface tcp set heuristics disabled[/quote]
Heuristics is a feature that can interfere with auto-tuning and disabling it can improve Internet speeds and in fact heuristics have already been disabled in Windows 8.1 and greater. Auto-Tuning on the other hand should NEVER be disabled.


Source: An Update on Windows TCP AutoTuningLevel | Networking Blog

:)

 

Auto Tuning feature for WinHTTP traffic & Large Send Offload

To check whether Auto-Tuning for WinHTTP is enabled on your device, open a Command Prompt Window as Administrator

Run this command and hit enter:

netsh interface tcp show global

Check the 'Receive Windows Auto Tuning Level' , it is usually set to normal

To disable it, run this command:

netsh interface tcp set global autotuninglevel=disabled

To enable it, run this command:

netsh interface tcp set global autotuninglevel=normal

Restart your system and check your speeds improve . . .

 

windows 10 Large file transfer speed drop

This is a terrible idea. It will make all TCP data transfer slower. This includes the Internet. Windows TCP autotuning is there for a very good reason and you should not disable it. If you have disabled autotuning then re-enable it and restore your Internet
speeds

See the TCP team's blog post on autotuning:

An Update on Windows TCP AutoTuningLevel

...From the Windows TCP team

 

hmm I had disabled mine.

 

I do not understand any of this stuff, that is why I rely on TCP Optimizer, which obviously sets it as it should be. *Cool

 

Disabling this is a Current Fix I have seen for many with Realtek Nics' and seemed to help a while back with one of my systems. Though I am not knowledgeable enough to advise further one way or the other myself.

I actually thought TCP Optimisers had gone the way of the Dodo , so will check it out.



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"Realtek NIC Fix"

I had problems with win 10 64 bit and my onboard lan interface. This solved the problem. It may also fix wifi based cards


run cmd box in admin mode and enter ( you can do this via task manager, file, new task tick admin privileges)


netsh int tcp set global autotuninglevel=disabled (press enter)


you can also try =restricted or highlyrestricted as option for best results.


the default is normal which causes errors on realtek lan cards.

Even using latest Realtek v10 win 10 driver

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Interesting, well I guess this auto-tuning does not work on mine computer anyway.
I have deleted all protocols like QoS and supposedly, I have no internet connection.

 

I just got TCP Optimiser 4 but it looks like either Windows or the Realtek Nic Driver is disabling stuff again ,assuming Optimiser is working like I think it should? Will have another look when I have a bit more time.


KB.

 

Well no protocols would equal no internet ....you would need at least IPV4 and hopefully IPV6 too if your ISP uses it.
I have 8-10 items listed

 

I have IPv4, the rest is just junk, which can cause problems, required only if you use sharing or something like that.
As for IPv6, I am behind 5 routers, ISP does not plan to use it anytime soon, but I am glad, it is a privacy nightmare.

 

May I ask why you need five routers?

 

I am behind ISP's routers. That way IPv4 addresses will never run out, ISP can use as many as he wants with just 1 IP.

 

I am not sure my system uses all of the Protocols listed , some are added by the Realtek Drivers and some by Windows , but I don't know enough to know what I could remove. I do use an internal network for the house, so I also use Client for Microsoft Networks and the File and Printer Sharing and I think the Link Layer stuff is for that too. Most of the Protocols I see on the Realtek Nic are the Same as on my Intel Nic on another computer so I assumed most were installed by Win10 for some reason?

I just got IPV6 recently , so am interested to know more about why it is a Security/Privacy Nightmare ?


.

 

Why the FBI wants IPv6: Because IPv4 with NAT makes it hard to track criminals -- GCN

Then again, it seems, that I was using an outdated information, I have just always disabled IPv6 as a custom. But since my ISP stated, he does not even plan to implement IPv6, he can use many NAT routers as he wants, it does not matter.

Computer IPv6 addresses Security Hacker

Facing the privacy implications of IPv6

 

Thanks for that , I will have to look into it, even the techs at my ISP seem like they really aren't aware of it ,or its implications.

KB.