How to Remove the Popup Ads in Avira Antivir

While Avira Antivir has one of the best detection rates of all antivirus, one of the main disadvantages is that after updating, you get annoying full-screen ads nagging you to upgrade. To remove these, read on.

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Steps

Windows 2000 / Windows XP Pro
Go to Start > Run.
Type gpedit.msc and click OK.
Navigate through User Configuration > Administrative Templates > System.
Double click "Don’t run specified Windows applications".
Enable it and click show.
Add "avnotify.exe".
Click OK on all open windows.
Restart.

Alternate:

Start > Run: secpol.msc (You can also access this program through ‘Control Panel > Administrative Tools > Local Security Policy’ this is useful if it is easier the location of this rather than the file name)
Right click "Software Restriction Policies," Choose "New Software Restriction Policies." (Skip this step if there are subfolders in Software Restriction Policies already.)
Right Click "Additional Rule" folder > New Path Rule.
Where it says Path, Type the path of avnotify.exe on your computer, or use the Browse button to find it. (On XP64 using a default install of Avira, the path is: (C:Program Files (x86)AviraAntiVir PersonalEdition Classicavnotify.exe)
Make sure the "Security Level" Dropdown menu is selected as "Disallowed"
If you would like to make sure it went through correctly, open the Additional Rules folder, and verify the path and security level.
Enjoy the absence of nag windows.

Windows XP Home

Boot into Safe Mode.
Log into an account with administrator privileges.
Open [driveinstalledon]:Program FilesAviraAntiVir PersonalEdition Classic.
Right click on avnotify.exe and go to Properties > Security > Advanced.
Click on Edit-> Traverse Folder / Execute File-> deny-> OK.
Repeat for all users.
Reboot your computer normally.

Windows Vista Business/Ultimate

Open the control panel through Start > Control Panel.
Go to Administrative Tools > Local security policy.
Click on Software Restriction Policy > Action > Create new restriction policy.
Right-click, and go to additional rules > new path rule.
Click Browse and navigate to C:Program FilesAviraAntiVir PersonalEdition Classic and double-click avnotify.exe.
Set the security level to Disallowed.
Click apply and OK.

Windows Vista Home Premium

Go to C:Program FilesAviraAntiVir PersonalEdition Classicavnotify.exe.
Right-click avnotify.exe and go to Properties > Security.
Under the group or username SYSTEM, click edit.
Put a checkmark under the DENY column for "read and execute"

Tips

Before giving up, try setting a restriction on avnotify.dll as well.
An easier way to do this is just to pay for Avira AntiVir Premium, if you are satisfied with the free version.

Warnings

Disabling the popup ads may be considered a violation of Avira’s End-user license agreement (EULA). The licensee is not authorized without the written express permission of Avira, to change, translate, retro-develop, decompile or disassemble the Software, or to create works derived from the Software or the documentation, or to reproduce, translate, change or create works derived from the documentation , insofar as this is not absolutely necessary within the context of contractual use. Understand that Avira has the right to terminate your software without notice in the case of substantial violations of contractual obligations .
CAUTION: Group Policy Editor and the other tools mentioned in this article are very powerful. Improper use may turn your computer into a paperweight. Please, do not mess around in there unless you know exactly what you’re doing.

Sources and Citations: How to Remove the Popup Ads in Avira Antivirtheeldergeek  , avira forum  , ghacks