Post-update problem on WinXP

[George Yves]

A significant group of Russian users complaint that they lost internet connection and even damaged their WinXP systems after 121205-0 update: http://forum.avast.com/index.php?topic=110770

Avast signaled they have some viruses and they deleted the suspicious files. After that they lost all settings for internet connection.

I advise them to send messages to Avast support but I can't help them with anything more substantial. I think Avast experts should pay attention to the thread.

[Pondus]

Avast signaled they have some viruses and they deleted the suspicious files. After that they lost all settings for internet connection.

do they say what file and location of the file  that was deleted?

[George Yves]

They "aren't sure". One of them deleted svhost.exe and "some other files". By the way half of the posters in the thread work in support departments of internet providers. I think they work in the same company.

And could you ask them directly in the thread? Write them in English and I'll try to translate.

[Pondus]

And could you ask them directly in the thread? Write them in English and I'll try to translate.

Essexboy is the expert here......i sendt him a PM

[George Yves]

And could you ask them directly in the thread? Write them in English and I'll try to translate.

Essexboy is the expert here...

Is he here now? Emotions run high in the thread.

[essexboy]

It was an FP on TCPIP.sys it will be corrected on the next stream update

[George Yves]

It was an FP on TCPIP.sys it will be corrected on the next stream update

And what should they do now? They tried to re-install Avast but as soon as they get 121205-1 update everything crashes again.

[essexboy]

There is the option to delete or ignore ..  Select ignore (no action)

Edit : Although having said that I did a full scan  on my XP vm and nothing was detected

[frag]

There is the option to delete or ignore ..  Select ignore (no action)

Edit : Although having said that I did a full scan  on my XP vm and nothing was detected

Hi there. Any suggestions to assist users who actually deleted the file?

It was an FP on TCPIP.sys it will be corrected on the next stream update

And what should they do now? They tried to re-install Avast but as soon as they get 121205-1 update everything crashes again.

As my XP vm say 121205-1 is fine.

[George Yves]

I have just advised the users to restore their systems and to re-install Avast. To tell the truth it was a real avalanche of complaints in the middle of the night. Sorry but I have to go to bed because it's half past one here and I must get up at half past five.

[hayshays]

I have the same problem on different PC in different companies, with windows xp installed. I think the reason of this situation is patched tspip.sys. By default tcpip.sys have 10 connections and with help of some utils, people patch it for exampel 100 connections, this actions i did by my self on all the computers where this problem is. One of this patcher calls Half-open_limit_fix_4.2.exe

Lots of not original windows xp distributives have alreadypatched tcpip.sys.
When I unninstall avast and recover tcpip.sys from file c:\windows\system32\tcpip.copy network doesnt work. I steel try to find a solution, because i dont have a distrubutive of windows now with me to recover from it, i think this comands could be solve a problem
expand X:\i386\tcpip.sy_ c:\windows\system32\tcpip.sys
You make me work hard today to fix this problem, it is easy to kill my self , becase I have 150 PC clients, and big mount of them already kill tcpip with avast..
p.s. your captcha make me mad, its very hard to see symbols

[teknobass]

I can confirm this problem occurs with Windows XP systems which have a patched tcpip.sys.Multiple systems on multiple locations affected

[George Yves]

User Obramko created a fix that can repair the damage:

Download the fix from here: http://depositfiles.com/files/jx9xqxtes

Unpack the archive, run the file fixtcpip.bat and restart your computer.

And some experienced users suggest two improvements for Avast:

1) To set Avast by default not to delete suspicious files but to move them to the chest;

2) Even if users choose to delete a file, a copy of it must be automatically sent to the chest.

[Ridick]

gracias. de verdad eres el maestro yoda! xD
thank you, and the problem is solved, I was desperate to see my pc did not connect to internet

User Obramko created a fix that can restore the damage:

Download the fix from here: http://depositfiles.com/files/jx9xqxtes

Unpack the archive, run the file fixtcpip.bat and restart your computer.

And some experienced users suggest two improvements for Avast:

1) To set Avast by default not to delete suspicious files but to move them to the chest;

2) Even if users choose to delete a file, a copy of it must be automatically sent to the chest.

[claudiuc]

Fast download link, translated in english here:
http://www.avastantivirus.ro/suport-tehnic  - Fix avast! XP NETWORK