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Windows 7: Can't update Avast or Windows Update... Desperately need help ASAP

01 Aug 2010   #11
karlsnooks

MS Windows 7 Ultimate SP1 64-bit
 
 

AssaultRifle,
Did you uninstall Avast?
Did you install Microsoft Security Essentials.

An excellent program to get rid of and check for bad guys is MalwareBytes.

A high number of SevenForum contributors use MalwareBytes occasionally.
VIRUS and MALWARE REMOVAL / PROTECTION
1. Download MalwareBytes. Malwarebytes
2. Disconnect from the Internet.
3. Disable your present antivirus software and firewall.
4. Remove your present antivirus software and firewall.
5. Install and run the MalwareBytes Quick Scan (remove any bad guys). 3min 29secs on my laptop.
6. Reconnect to Internet.
7. Update MalwareBytes.
8. Run malwarebytes quick scan again.(remove any bad guys). 3min 38secs on my laptop.
9. Run MalwareBytes full scan. 16min 8secs on my laptop. With large,full disk ~2hours.
A. Disable your present antivirus software and firewall
B. Remove your present antivirus software
C. Download Microsoft Security Essentials.
http://www.microsoft.com/security_essentials/
D. Run Microsoft Security Essentials. Quick Scan - ~8 min on my laptop.
E. Run Microsoft Security Essentials. Full Scan - ~ 1hr 50 min on my laptop.
Now I advise you to uninstall MalwareBytes and only install again when and if you need it.
Why?, you ask. Leaving MalwareBytes installed slowed my system. AutoRuns showed MalwareBytes processes running even after exiting from MalwareBytes.


My System SpecsSystem Spec
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01 Aug 2010   #12
AssaultRifle

Windows 7 Home Premium 64-Bit
 
 

Quote   Quote: Originally Posted by Jacee View Post
Clear your DNS cache and restore MS's original hosts file (sounds like you can't connect because malware has stopped it from doing so)

Copy and paste these lines in Note pad.
@Echo on
pushd\windows\system32\drivers\etc
attrib -h -s -r hosts
echo 127.0.0.1 localhost>HOSTS
attrib +r +h +s hosts
popd
ipconfig /release
ipconfig /renew
ipconfig /flushdns
netsh winsock reset all
netsh int ip reset all
shutdown -r -t 1
del %0

Save as flush.bat to your desktop. Right click on the .bat file and choose to run as Administrator. Your computer will reboot itself.

Now, run an online scan using Eset Free ESET Online Antivirus Scanner
I didn't even have to do the 2nd part. This worked perfectly. Thanks!!
My System SpecsSystem Spec
01 Aug 2010   #13
Petey7

Windows 7 Professional SP1 64-bit
 
 

I'm a little worried about the rootkits on your computer. Those are never good. Make sure all detected were removed. Which AV program actually found them? What is your regular AV?
My System SpecsSystem Spec
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01 Aug 2010   #14
AssaultRifle

Windows 7 Home Premium 64-Bit
 
 

Quote   Quote: Originally Posted by Petey7 View Post
I'm a little worried about the rootkits on your computer. Those are never good. Make sure all detected were removed. Which AV program actually found them? What is your regular AV?
I downloaded this thing from the Kaspersky website (it wasn't the actual AV) and it specialized in removing rootkits. I removed most of them with that. Then I scanned with Super Anti Spyware and removed any remaining viruses.
My System SpecsSystem Spec
01 Aug 2010   #15
Jacee
Microsoft MVP

Windows 7 Ultimate 32bit SP1
 
 

What did Kaspersky find?

Please read what a Rootkit is Rootkit - Wikipedia, the free encyclopedia
My System SpecsSystem Spec
01 Aug 2010   #16
gaz

Windows 7 X64 Bit
 
 
Updates

And does Windows update just fail??,whats the error code (if there is one)

If Avast has its own firewall,you might have to make Wu an exception

Check to see what AV and Firewalls are installed and on/off in Action center??
just an idea
My System SpecsSystem Spec
01 Aug 2010   #17
gregrocker

 

At this point, why wouldn't you copy your data out, wipe the HD and clean reinstall?

These are likely highly sophisticated infections programmed to block access to the very scanners which can kill them. I have only ever been able to completely overcome these by wiping the HD with three sets of zeroes (DOD standard) and clean reinstalling: https://www.sevenforums.com/tutorials...tallation.html

Then there is the problem of your data. Whatever disk you put it on or has had access to it needs to be quarantined from any other machine, then scanned with every available boot scan to sanitize it. And it still probably won't be completely safe. FREE Bootable AntiVirus Rescue CDs Download List

At this point, running any AV outside of boot mode just gives these sophisticated viruses a way to hide in running programs, can set them loose on a network, even infect the disk media and connected drives.
My System SpecsSystem Spec
01 Aug 2010   #18
Jacee
Microsoft MVP

Windows 7 Ultimate 32bit SP1
 
 

@ gregrocker, I agree with you about wiping the HD and a clean install.
Just because one may think the Rootkit is gone, the computer will never be stable again ... it was severely compromised.

I don't deal with Rootkits. Best to know you have a clean and fully functioning machine rather than one using a crutch.
My System SpecsSystem Spec
01 Aug 2010   #19
gregrocker

 

Jacee, Nice to know they are even rootkits. I have done hand-to-hand combat with them where they took over an entire house. It was like war where they would block my exits. I only won out in the end by wiping HD.

Is there residual damage once the HD is sufficiently wiped? Hardware? Underlying code contamination? Change the HD? Just askin.
My System SpecsSystem Spec
01 Aug 2010   #20
Petey7

Windows 7 Professional SP1 64-bit
 
 

Root kits can infect the BIOS and firmware of different hardware. So, I guess you can never be sure they are fully gone.

Reference: Rootkit - Wikipedia, the free encyclopedia
My System SpecsSystem Spec
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 Can't update Avast or Windows Update... Desperately need help ASAP




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