Avast 7 and problem with TCP\IP Internet
On December 5, 2012, some users using AVAST antivirus encountered problems with network connections and Internet operation.
The antivirus triggered a false alarm on the TCPIP.sys system file, which caused all network connections to be disconnected.
If you have Avast antivirus installed on your computer and there is a problem with the Internet and network connections, then this is the place for you. There are several ways to solve this problem.
Method No. 1(thanks to Obramko from the official avast forum for the patches)
Download fix for Windows XP (SP3)
Download the fix for Windows 7
Instructions for how the patch works:
1. Download. Unpack it onto the desktop of the faulty computer. (right click on the archive, select "extract to
ticking folder"
2. Disable all Avast screens (right click on the Avast shortcut near the clock and select “manage screens”
On old operating systems such as Windows XP Sp2 may require a separate patch to unlock
network connections.
Download patch for Windows XP SP2.
To find out Windows version XP, click Start, right click on "My Computer" -> "Properties" there will be
operating system version is shown.
Method 2.
The People's Council says:
1.Restore the latest working copy of the system,
2.Download and reinstall Avast and “ignore” this defect.
How to reinstall Avast.
1. Download to HDD full avast installer!
2. Download the avast! removal utility to your desktop. (http://files.avast.com/files/eng/aswclear.exe)
3. Remove installed Avast. (Start, Control Panel, Add/Remove Programs)
4. Restart your computer. Enter safe mode (press F8 before Windows loads)
5. Run the avast removal utility. (aswclear.exe) specify the version and path to the program.
6. Restart your computer. (normally)
7. Install new version Avast and restart the computer.
Note: Avast! Removal Tool can be used without uninstalling the Avast program itself.
To do this, you need to disable self-defense.
1. Open Avast
2. Settings
3. Troubleshooting
4. Uncheck "Enable self-defense"
Method 3.
Find the folder C:/Windows/system32/dllcache, it contains a backup copy of the pcpip.sys file
You need to download or copy this file to the folder C:/Windows/System32/drivers and restart your computer.
Or copy the tcpip.sys file from the installation disk (link)
Important! Download the tcpip.sys file and copy it to the WINDOWS\system32\drivers folder.
Method 4.
1. Enter Safe Mode (press F8 before Windows loads)
2. Click Start -> Run -> regedit and delete 2 items in the registry
HKEY_LOCAL_MACHINE/System/CurrentControlSet/Services/Winsock
HKEY_LOCAL_MACHINE/System/CurrentControlSet/Services/WinSock2
3. Open the folder %windows%/inf, find the file Nettcpip.inf in it, open it using notepad (right click, open
using: select notepad) find the section in the position Characteristics = 0xa0 change
Open the "General" tab - select Install -> Protocol -> Add.
In the protocol selection menu, click "Have from disk"
Copy a file from disk: write the path C:/windows/inf then click OK.
Select Internet Protocol (TCP/IP) and click OK again
Screen Trouble-shooting allows you to change default settings to resolve possible problems with the operation and compatibility of Avast Antivirus.
It is recommended to leave the default configuration. They should only be changed if you have a thorough understanding of Avast Antivirus or if requested by an Avast support representative to resolve problems. After making any changes, click OK to save the settings.
Note. Other troubleshooting information can be found on the Getting Started page.
Passive mode disables all active protection, including various means protection and firewall. In this mode, you can use several antivirus programs simultaneously without reducing the performance of your PC and the reliability of virus detection. In passive mode, Avast receives all program updates and virus definitions, allowing you to run manual scans to detect problems on your PC. However active protection Avast Not works.
This feature is disabled by default unless you are installing Avast on a computer that has another antivirus program. To manually activate passive mode, click the slider Turned off so that it changes the value to Included. Then click OK And Reboot now to confirm the changes.
If you want Avast Antivirus's active protection to protect you from malware and other security threats, make sure the passive mode switched off, A following conditions complied with.
Note. If Avast is the only antivirus software installed on your computer, enable passive mode only temporarily to eliminate certain malfunctions.
Troubleshooting may require you to restore your Avast Antivirus settings to their default settings. To do this, follow these steps:
Action Reset removes all your user settings. This action cannot be undone.
Note. Before restoring default settings, you can create backup copy your settings by selecting Settings Back up settings.
If you are having problems sending or receiving messages Email during use mail screen with an email client ( Microsoft Outlook, Mozilla Thunderbird etc.), you can fix this problem by identifying the ports that are used by your email service provider in the Mail.
By default, each protocol has the standard port numbers listed below.
| SMTP port(s): | 25 857 | Protected ports: | 465 |
| POP port(s): | 110 | Protected ports: | 995 |
| IMAP port(s): | 143 | Protected ports: | 993 |
| NNTP port(s): | 119 | Protected ports: | 563 |
If you (or your email service provider) use other ports, enter them in the text boxes next to the appropriate protocols to ensure that Avast scans your email messages. Use commas to separate multiple port numbers.
In a text field Ignored addresses enter the addresses of services or ports that you want to exclude from scanning (for example, smtp.example.com). If necessary, separate multiple addresses with commas.
Selecting a checkbox for an option Ignore local communication Prevents Avast from scanning internal system communications between applications running on the PC. By default, this option is active. Disabling this setting will allow Avast to scan all email communications, which improves security but may reduce system performance.
Avast Free Antivirus is a free antivirus program (requires free registration) that has won many awards and has a proven track record of being easy to use and reliable. Some features of the program: the presence of a resident scanner, the ability to scan archives, check outgoing and incoming mail, scripts and files downloaded from the Internet, as well as scanning all devices connected to the computer and much more. The antivirus has a simple and intuitive interface, which makes it accessible to both advanced and novice users.
Step 1
Download the installer for the desired version of Avast from the official website.
Run the installer as an administrator. To do this, right-click on the installation package and select “Run as administrator.”
For most users, it is recommended that you simply click the Install button to start the basic installation. In this case, the program will automatically install all the necessary modules, security settings and default values. If you select "customize", you will have the opportunity to choose which program modules should be installed.
Note: If you do not want to additionally install the Google browser, uncheck the box next to “Yes, install the Google browser as well.”
At the first stage of installation, you will be asked to select where to install the antivirus.
Step 5
Here you need to select the components that you want to install for Avast Free Antivirus. In most cases, you should just leave this part as default. You can configure the installation of individual protection components and services. Once you are done with the setup, click the “Install” button and wait for the installation to complete.
After installation is complete, the program will offer to install the antivirus on mobile devices. If you don't need it, click No.
Step 9
After you have installed the program, depending on which version is installed, you must perform the following steps:
First, open the Avast user interface by double-clicking the icon on your desktop or system tray.
Step 1
Go to “Scanning” and select “Scan for viruses” (or any other item, depending on your needs).
On the Scan screen, select a scan type from the drop-down menu and click the Start button.
Wait until the procedure is completed. Once the scan is completed, a notification will appear with the result.
If a threat was detected, click the Show Results button to view any actions taken automatically based on the scan settings, or take manual action on any types of threats detected. You can also access scan reports by clicking "View History" at the bottom of the scan screen.
Scanning browser add-ons
If "Smart Scan" doesn't get old for you, you can return to the Overview home page and select "Scan for browser add-ons."
Scanning home network
After selecting this item, the antivirus will start scanning your home network for vulnerabilities, such as portable devices, WiFi status, router settings, factory passwords, etc. This is a new feature in Avast 2015 that helps detect potential problems throughout the network you use. As in the previous step, you can analyze whether there are problems with your network.
Also useful feature, which helps identify unwanted software that negatively affects the overall performance of your computer.
Hello! Today I decided to write a short article in which I will tell you what mistake is most often made when setting up routers on your own. Caike problems appear later and how to fix everything. Where do I even get this information from?
Now look a little to the right, in the right column of the site. You see, there is the total number of comments that were left on this site. I don’t know what number you see there now, but at the moment it’s almost 9000 comments (8894 to be exact).
Almost all comments are questions that I had to answer, advise something, provide a link to the desired article etc. What am I getting at, these comments are a great source of unique information both for me and for visitors to this site. These are unique cases, I would even say life problems :).
Also, most of these comments relate to problems that arise during the setup and operation of routers, wireless adapters, Wi-Fi networks etc. So I made some conclusions from these comments, and from the articles that relate to this most popular mistake.
Yes, this is the most popular problem. I wrote about her in an article. By the way, the article is also no less popular :).
Why does this problem occur and why is it the most popular?
It usually occurs due to the exact fact that when setting up the router incorrectly indicate the parameters provided by the provider.
Also, pay attention to the link by MAC address u. If your provider does it, then do not forget to clone the MAC address in the router settings. Just clone from the computer to which the Internet was connected.
And also, in properties Wireless network connection , or LAN connection V Internet Protocol Version 4 (TCP/IPv4) you need to set to receive IP and DNS automatically.
Here is the most common mistake and its solution.
If you have a provider for which a special connection was created on the computer before installing the router, and after installing the router the Internet works only on one computer, or works while this computer is turned on, then you need to clarify something here.
You see, the router itself must establish a connection to the Internet, not the computer. You need to delete the previously created connection on your computer. And in the properties of the network adapter, set to receive IP and DNS automatically.
We specify all the parameters that the provider provides only in the router settings. Connecting on a computer, if you have a router, is not necessary.
I also wrote an article on this issue.
I don’t know how useful this article was for you, but I hope that my time was not wasted.
Before setting up a router, the main thing is to understand how it works and specify correct settings, which your provider gave you when you connected to the Internet. If you don’t know what parameters to indicate and what to choose, then just call the provider and ask.
As always, ask questions in the comments, we’ll sort it out. Best wishes!
This small box that was provided to you by your Internet provider, or you purchased yourself in one of the store chains household appliances and electronics, is the weak link in your home Internet connection.
The Avast team took care of this and developed new feature to protect your home network Home Network Security. Which was integrated into the new version of Avast 2015. Home Network Security scans the router for vulnerabilities and identifies potential security problems.
Today, routers are the weakest link in home network security in many homes and small businesses, so this is a very necessary and useful feature.
But, nevertheless, here we are faced with a problem. Today in the world there is a huge number different types routers, but most users simply buy the one that is “cheaper and works”, or simply get a router from their Internet providers. This means that security is already at risk. Home Network Security Feature Home Network Security was designed to protect against these threats:
Yours wireless network insecure due to lack of encryption. This way, someone nearby, such as your neighbor, can connect to your Wi-Fi using throughput channel and access your devices (printer, network drive etc.)
Your router can be accessed via the Internet, so hackers can control and change the settings of your home network, also disconnect you from the Internet and steal personal data from your electronic device.
Your Internet connection is at risk and your router may be hacked.
Your devices can be accessed from the Internet. This happens when Internet Protocol version 6 (IPv6) is enabled in the router settings and devices receive IPv6 addresses that are not protected. The problem lies, first of all, not in the protocol, but in the router, which is not able to provide security to the devices receiving these addresses.
With Home Network Security, integrated into all Avast products, we can keep your devices safe.
There are many guides with step-by-step information available for free from router manufacturers. For example, . Look for the manual for your model and read it. Everything you learn will help you protect your home network.
