I looked and it appears Avira Freeware now only has the web installer, which is OK, I prefer full downloads so I can save the version, but the web installer should do the job:
http://www.avira.com/en/download/product/avira-free-antivirus
Tell me if anything is different after the setup downloads and starts:
This is the most important part:
To disable Notifier nag screen: Windows 2000/XP Control Panel > [in Windows 7/8, click on (view by Category) System and Security first] > Administrative Tools [fourth from bottom] > Local Security Policy > Right click on Software Restriction Policies > Create New Policies SO THAT ADDITIONAL RULES SHOWS UP UNDERNEATH > Right click on Additional Rules > New Path Rule... > Browse... to the path of avnotify.exe default is
C:\Program Files (x86)\Avira\AntiVir Desktop\avnotify.exe
or
C:\Program Files\Avira\AntiVir Desktop\avnotify.exe
> Set the security level to Disallowed > OK
Ignore Avira's warnings to uninstall Comodo Firewall or similar programs which intercept phone-home attempts.
SELECT: Custom and CHECK: I accept the End User License Agreement > Next >
UNCHECK everything when asked to install Avira Toolbars > Next > Next > Next > Next
Welcome to the Configuration Wizard > Next > Next >
Allow the configuration wizard to keep the default Express Setup options. [Do not Select All.]
(UNCHECK: Application, Games, Jokes, Programs that violate the private domain, and Unusual runtime compression.) > Next > Next >
UNCHECK: Performs a quick systems scan after the installation
Next > Finish >
System Scanner (upper left) > Configuration (upper right) > Yes >
UNCHECK: Follow symbolic links (on right) > System Scanner > Scan > Action on detection >
Set for Automatic, Primary action: Ignore [if you want to just scan folders and get a scan report without deleting files or being prompted what to do if virii/malware are found.]
> General > Security >
Disable being notified every time USB drive has an AUTORUN.INF file:
UNCHECK: Block autorun function
> General > Events > Select: Limit size to max. >
> General > Reports > Select: Limit number to max. >
> General > Alerts > UNCHECK everything except Dial-up connection is used
> OK
> Scheduler [on lower left] > UNCHECK everything.
Also block these two files from accessing the internet, using Comodo Firewall or similar software:
C:\Program Files (x86)\Avira\AntiVir Desktop\apnstub.exe
C:\Program Files (x86)\Avira\AntiVir Desktop\ipmgui.exe
The blocked files are to block Ask toolbar check and to block a popup nag.
apnstub.exe is related to a Toolbar check. AntiVir software checks whether the ASK-Toolbar is already installed on your computer. If the Toolbar is already present, AntiVir will not bother you with a slide-up alert asking you to install it. The apnstub.exe utility will do this check three times (the next three times that you reboot your computer). An additional check is done whenever the AntiVir setup dialog is displayed, in order to once again confirm the presence or absence of the Toolbar. If the ASK-Toolbar is already present, AntiVir will not offer you the setup option for installing the Avira-Toolbar.
ipmgui.exe is related to Avira messaging popup nag.
In case you are not using Windows 8 pro, then:
For Windows XP Home or Windows 8 (non-Pro version) you would need to boot into Safe Mode and log in as Administrator, then
go to
C:\Program Files\Avira\AntiVir Desktop\avnotify.exe
and right click on it >
Properties > Security TAB >
[Under Group or usernames] SYSTEM > Edit button > CHECK: Deny for Read & execute > Apply > OK > OK
Make sure SYSTEM is set to Deny for Read & execute before rebooting.