Network Protocols

Slartybart · 02 Jun 2016

You'll restart the machine at least once.
Save any work, close open programs.
Any unsaved work will be lost.

The run command quickly gets you to Network Connections

WinKey+R ncpa.cpl

After each suggested solution, see the issue is resolved.
If one suggestions fixes the issue, you do NOT have to do any of the other suggestions.

Run the built-in Troubleshooter

Right click the network icon on the Taskbar
Pick Troubleshoot problems
Select Identify and repair network problems
Follow instructions in the troubleshooter
Reset networking
Launch Command Prompt (Admin)
Copy the lines in the code box below
Right click in the Command Prompt window to paste
Code:
```
netsh winsock reset
netsh int ip reset
netsh int ipv4 reset
netsh int ipv6 reset
ipconfig /renew
ipconfig /flushdns
```
Restart your machine
Disable IPv6

Open Network Connections
Right click on the affected adapter(s) (Wifi, Ethernet, or each one of them)
Select Properties
Scroll down to Internet Protocol version 6 (TCP/IPv6)
Remove the check mark
Press OK

Restart your machine
Reinstall TCP/Pv4

Launch Command Prompt (Admin)
enter the following commands

netsh int ipv4 install
exit

Restart your machine
Restart Your Network Adapters

Open Network Connections
Right click the affected adapter(s) (Wifi, Ethernet, or each one of them)
Pick Disable

Restart your machine

Open Network Connections
Right click the affected adapter(s) (Wifi, Ethernet, or each one of them)
Pick Enable
Uninstall and Reinstall Your Security/Antivirus Software

spapakons · 02 Jun 2016

When you try number 3, also make sure you uncheck (disable) any weird non-Windows protocol. Often antivirus programs install their own protocol to monitor traffic and protect you. But this protocol can malfunction and blocking your access to the router. Just disable it to be on the safe side. Malwares also tend to configure a proxy to redirect traffic. Make sure you disable any proxy server in Internet Options -> Connections -> LAN settings and let your LAN card to connect directly to the internet. Sometimes unchecking/checking the "Automatically detect settings" box also helps.

Matthew Wai · 03 Jun 2016

spapakons said:

Do you have latest driver (24 May 2016) ? If Windows 10 driver doesn't work properly, try Windows 8 driver or Windows 7 driver.

I just downloaded it again. The file version of setup.exe is 1.0.35.0, which is the same as that of the one I downloaded and installed on 14 May 2016.

When I used Windows 7 driver, the following problem arose.
http://answers.microsoft.com/en-us/i...9-4c931e436da2

spapakons · 03 Jun 2016

Have you tried all the suggestions by Slartybart a couple of posts earlier?

Slartybart · 03 Jun 2016

spapakons said:

Have you tried all the suggestions by Slartybart a couple of posts earlier? post# 242

and the additional information in post# 243
When you try number 3, also make sure you uncheck (disable) any weird non-Windows protocol.

Matthew Wai · 03 Jun 2016

spapakons said:

Have you tried all the suggestions by Slartybart a couple of posts earlier?

Do I have to try them when I can access the Internet although protocols are missing?

spapakons · 03 Jun 2016

Yes, to resolve the "protocols are missing" problem. Just save a system restore state first, just in case. If anything goes wrong you can return to this state and you'll be OK

Matthew Wai · 03 Jun 2016

If I disable TCP/IPv4 and TCP/IPv6, the 'protocols are missing' problem disappears, but the following problem appears.
"There might be a problem with the driver for the Ethernet adapter."
If I fix this problem, the 'protocols are missing' problem comes back.

spapakons · 04 Jun 2016

Then probably the TCP/IP protocol is not installed properly or corrupt. See earlier posts in this thread how to reinstall it or how to import the relevant registry settings from a working system.

Matthew Wai · 04 Jun 2016

There are 250 posts. Which one do you mean?