Frequently asked questions (FAQ)

Here you can find the answers to the most important questions regarding our products. Please find a detailed instruction in the Avira Knowledge Base.

Upgrade AntiVir Windows Server, Version 8

Who can I contact, if I have questions regarding migration?

How is the new Avira AntiVir Server, Version 8 administered with the Avira Security Management Center 2.0 (SMC)?

What happens to the configuration settings of the old version?

Avira General

What is the difference between on-access and on-demand scanning?

What is the difference between AV Guard and AV MailGuard?

What is heuristic?

Securing the license file on an external data support.

Does AntiVir detect DLL injections?

Where can I see which AntiVir product is installed?

Why can I not log in to the Forum with my user data from the Online Shop?

Is the source code of the AntiVir programs for Linux freely available?

Why does Avira GmbH offer a freeware at all?

Could I ask for a CD with the AntiVir software?

To what extent does Avira support Windows Vista?

How can I get the AntiVir software?

Does Avira supply Spam protection for private users?

Which AntiVir version contains a Firewall?

How does the license extension work?

Why can't I open the license key?

Why don't I receive per email my license key?

Which sections of the file are scanned?

Where do the unusual file names in the logfile come from?

What exactly means "Use smart extensions"?

How can I get a license file?

Does the download of the installation file for AntiVir software cost anything? Are there additional costs?

What is Cleverbridge?

What is the Auerbach Foundation?

I can't find an answer to my question here. What shall I do?

Avira AntiVir PersonalEdition Classic

My AntiVir Classic software has expired. Is the product no longer free?

What should I do, if AntiVir Guard stops?

Manual update of the license file for AntiVir Classic for Windows / Unix

Why doesn't the Rootkit Scanner support exceptions?

The printer works only if AntiVir Guard is deactivated. What should I do?

Is there any difference in the virus detection of Classic and Premium?

Why am I not allowed to use AntiVir Classic for commercial purposes?

Avira AntiVir PersonalEdition Premium

Does the license of AntiVir Premium renew itself automatically?

What should I do, if the AntiVir Update does not run?

The printer works only if AntiVir Guard is deactivated. What should I do?

What should I do, if AntiVir Guard stops?

Why is reboot necessary after update?

Why doesn't the Rootkit Scanner support exceptions?

What exactly happens, when only the services are reloaded after reboot?

What is the difference between AntiVir PE Premium and Avira Premium Security Suite?

Am I allowed to use AntiVir Premium / SecuritySuite Software on more computers?

Avira Premium Security Suite

Must I deactivate all installed Firewalls, in order to use Avira Firewall?

What should I do, if the AntiVir Update does not run?

The printer works only if AntiVir Guard is deactivated. What should I do?

How can I reactivate AntiVir MailGuard?

What should I do, if AntiVir Guard stops?

Why is reboot necessary after update?

Why doesn't the Rootkit Scanner support exceptions?

What exactly happens, when only the services are reloaded after reboot?

What is the difference between AntiVir PE Premium and Avira Premium Security Suite?

Can I use the AntiVir Premium / SecuritySuite Software on several computers?

Does the Avira Premium Security Suite support other protocols, apart from ICMP, UDP and TCP (e.g. IPX)?

Does the Firewall display hidden processes?

How long is the licensed period for Avira Premium SecuritySuite?

Avira AntiVir Workstation

What should I do, if the AntiVir Update does not run?

The printer works only if AntiVir Guard is deactivated. What should I do?

How can I reactivate AntiVir MailGuard?

What should I do, if AntiVir Guard stops?

Why doesn't the Rootkit Scanner support exceptions?

What exactly happens, when only the services are reloaded after reboot?

Why is reboot necessary after update?

Avira AntiVir Windows Server

What does the Windows message "The service was terminated with the service-specific error xxx" displayed on loading AntiVir mean

How can I update the main program of AntiVir for Server?

When starting the service "AntivirDownloader" the system reports an Error. What's wrong?

Does AntiVir also protect the client files?

Will AntiVir run on the Terminal Server?

Does AntiVir Windows Server have a tray icon?

Why does AntiVir for Server require a system restart after every update?

Avira AntiVir Exchange Server

How can I update AntiVir for Exchange?

Avira Security Management Center

Can I also install other manufacturers' products by means of the SMC?

How does the Testmode of the Internet Update Manager in SMC2 work?

The SMC displays all clients with the status offline. What does it mean?

Can I reinstall or uninstall faulty AntiVir modules using the SMC?

The shared configuration has not been applied to all clients. Why?

Is the Administrator password (for Agent installation) saved?

What can I still do (uninstall, logon, etc.) after the SMC license expires?

What is the role of Sync Port/ Async Port by SMC Installation?

After installation, the SMC denies my access.

Internet Update Manager

How do I save configuration changes in IUM?

How high is the netload between MMC Frontend and the Server service (especially during updates)?

Avira AntiVir UNIX Workstation/Server

Is there a graphical configuration tool for AntiVir Unix Workstation?

What can I do with the Command Line Scanner?

Is there a changelog for AV Workstation/Server?

How do I activate the license? What do I do with the key file?

Avira AntiVir UNIX MailGate / Suite

How can I test AntiVir MailGate after installation?

Will AntiVir MailGate work on a different processor except the Intel x86-compatible processor?

Which Linux distributions does AntiVir work with?

Is there a graphical configuration tool for AntiVir MailGate?

Is there a changelog for AntiVir MailGate?

Why don't you supply AntiVir Milter any longer? How can I continue to use AntiVir Milter?

How do I activate the license? What do I do with the key file?

Does AntiVir MailGate work with fetchmail?

Which MTAs does AntiVir MailGate work with?

Avira AntiVir UNIX WebGate / Suite

Is there a graphical configuration tool for AntiVir Unix WebGate?

Is there a changelog for AntiVir WebGate?

How do I activate the license? What do I do with the key file?

Why can't I find the parameter AclConfigFile in my avwebgate.conf?

Does AntiVir WebGate also scan encrypted connections?

Avira Vulnerabilities (English)

Access violation in LZH archives

CAB: Extraction aborted because of invalid version number

CAB: Extraction aborted because of manipulated CAB archives

Problems when parsing manipulated RAR archives (support for high version numbers)

Infinite loop in TAR archives

AVPack aborts extraction because of invalid packed size archives

Divide by zero's in UPX files

All about Malware

How frequently are VDF-updates available?

What are Rootkits?

A PHISH detection appeared, during an AntiVir scan. What should I do?

I have received a HEUR virus warning. What should I do now?

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