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Windows 7: Antivirus...Full Capabilities Offline

01 Sep 2018   #1
WyattWhiteEagle

Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
 
 
Antivirus...Full Capabilities Offline

Other than for updates and real-time, which antivirus' have full scan and removal capabilities offline?

I been using Avast Free for some time now and throughout the whole time I occasionally receive the message..."UI cannot connect". I used AVG by Grisoft before Avast acquired it and it never had the User Interface connection error.

IMHO, nobody anywhere should ever see a message like this from whatever security software they use. The user should be able to perform a full system scan offline, but with Avast Free Antivirus apparently the user needs connection to even open the Avast.


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01 Sep 2018   #2
F22 Simpilot

Windows 7 Ultimate x64
 
 

A lot of anti-virus software has gone cloud-based to keep up with the overwhelming amount of virus definitions, thus it needs an Internet connection. You could try Bitdefender Free. It may work better.

Or look at something else like Faronics Anti-executable or Shadow Defender.
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01 Sep 2018   #3
lolnothankyou

Windows 7 Professional 64-bit
 
 

You can try Kaspersky Virus Removal Tool 2015 - it's a portable .exe (for new definitions just redownload the .exe)

Unfortunately it's hard to find an antivirus program that doesn't send your data to remote servers. You can control that behavior with Windows Firewall Control 5.3.1.0
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01 Sep 2018   #4
Alejandro85

Windows 7 Ultimate x64
 
 

Any sane antivirus program would never require internet connection for operating, ever. Updates are the only exception to this, certainly having a need for internet connection, totally understandable. Other than that, nothing requires an internet connection.
Real time scanning is done by infecting your system with kernel drivers that intercept every file operation and pass though the antivirus engine, but of course the network is not involved at all.
A good usage of internet could be submiting doubtful samples for analyzing by their people, an action that always should be explicitly authorized by the user, but other than providing material for future definitions, it's not required for normal operation.

From here we could only guess. Avast is famous for showing spam to the user, and may "require" internet access to download unwanted ads. Many antiviruses with free and commercial versions use this bad practice on their freebies. Another idea is that they use some form of "license check", a questionable practice that verifies only if you're "authorized" to use the software, sometimes inflicted upon the free versions. A more far-fetched, but still possible scenario is that the antivirus includes some spyware and is stealing private data from you.
While none of those are really required, and are against the user's best interest, software may be designed to cease to function if the internet connection required for all of those is interupted. Of course, that's only my speculation, backed only by my personal experience and knowledge, but not by hard proof against any particular antivirus, so take those with a grain of salt.


Quote   Quote: Originally Posted by F22 Simpilot View Post
A lot of anti-virus software has gone cloud-based to keep up with the overwhelming amount of virus definitions, thus it needs an Internet connection. You could try Bitdefender Free. It may work better.
What everyone has failed to explain is what's that "cloud-based" thing is all about. What they say simply don't make any sense when put in the real world. Many definitions are easy to deal with, simply issue more frequent updates. But the scanning process itself has always, since day one and up to this day, ran locally, since "the cloud" has no idea what's happening in my computer.
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03 Sep 2018   #5
F22 Simpilot

Windows 7 Ultimate x64
 
 

The definitions come from the cloud to keep up with polymorphic malware. You're better off with a sandboxed OS.
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03 Sep 2018   #6
iko22

Windows 7 x64, Vista x64, 8.1 smartphone
 
 

Quote   Quote: Originally Posted by WyattWhiteEagle View Post
Other than for updates and real-time, which antivirus' have full scan and removal capabilities offline?

I been using Avast Free for some time now and throughout the whole time I occasionally receive the message..."UI cannot connect". I used AVG by Grisoft before Avast acquired it and it never had the User Interface connection error.

IMHO, nobody anywhere should ever see a message like this from whatever security software they use. The user should be able to perform a full system scan offline, but with Avast Free Antivirus apparently the user needs connection to even open the Avast.
With the Avast, had you gone into Settings > Update and changed both Program and Virus Definitions to Manual Update?

Another suggestion I can think of, is to run the MRT.exe (Microsoft Removal Tool) that you get once a month via Windows Update. That tool can perform full scans offline.
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 Antivirus...Full Capabilities Offline




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