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The supported operating systems for avast! Free Antivirus 5.0 and avast! Pro Antivirus 5.0 are Microsoft Windows 2000 Professional Service Pack 4, Microsoft Windows XP Service Pack 2 or higher (any Edition, 32-bit or 64-bit), Microsoft Windows Vista (any Edition, 32-bit or 64-bit) or Microsoft Windows 7 (any Edition, 32-bit or 64-bit).
The supported operating systems for avast! Internet Security 5.0 are Microsoft Windows XP Service Pack 2 or higher (any Edition, 32-bit or 64-bit), Microsoft Windows Vista (any Edition, 32-bit or 64-bit) or Microsoft Windows 7 (any Edition, 32-bit or 64-bit).
Note:
It means that avast! 5.0 isn't supported (isn't compatible, couldn't be installed and won't run) on DOS, Microsoft Windows 3.x, Microsoft Windows NT 3.x, Microsoft Windows NT 4.0, Microsoft Windows 95, Microsoft Windows 98, Microsoft Windows ME, Microsoft Windows Server operating systems, or any others which aren't specified as supported.
To download the latest version of avast! 5.0 in your language, proceed as follows:
- Open our website on www.avast.com.
- Click the SUPPORT tab at the top of the page.
- Click on the link Get other avast! 5.0 products in the section I need to download avast!
- Choose the desired avast! 5.0 product version:
- If avast! Pro Antivirus 5.0 or avast! Internet Security 5.0 was selected click the 'Downloads & Trial' tab on the next page.
- Select the desired language version and click the 'Download' button to initiate the download.
- When asked, save avast! 5.0 setup file to your computer, in a location where you will easily be able to locate it, on your Windows Desktop for example.
...or you can use the following direct download links for the latest multi-lingual versions:
Yes, but you don't actually need to do anything to uninstall avast! 4.x, because the avast! 5.0 installation program is able to detect the existing installation of avast! 4.x and uninstall it automatically.
If you are experiencing any problems with your computer, e.g. if your operating system has been corrupted by some other 3rd party software which prevents avast! from being correctly uninstalled, you can uninstall the program using the avast! Uninstall Utility.
Open the avast! Free Antivirus 5.0 interface and click the 'MAINTENANCE' tab. Next click 'Registration' and then 'Register now'. A new window with the registration form will open. Enter the required details into the form fields and then click 'Register for free license'.
avast! Free Antivirus 5.0 can now continue to be used for 12 months and you will continue to receive automatic updates to both the program and your virus definitions. At the end of that time, it will be necessary simply to register for a new free license.
For detailed step-by-step instructions please read the following article:
Inserting the license key into avast! Free Antivirus
Licenses for avast! Pro Antivirus 5.0 and avast! Internet Security 5.0 can be purchased via our website, www.avast.com.
After receiving your license file, you just need to double-click to open it and your license will be inserted into your program automatically.
Alternatively, save the license file on your computer, open the avast! Pro Antivirus 5.0 or avast! Internet Security 5.0 interface and click 'MAINTENANCE' tab. Next click 'Subscription' and then 'Insert license file'. A dialog window will open where you can browse your computer to locate your license file. Once you have located it, double click on it and it will be automatically inserted into the program.
avast! Pro Antivirus 5.0 or avast! Internet Security 5.0 can now continue to be used for 12, 24, or 36 months, depending on the purchased license, and you will continue to receive automatic updates to both the program and your virus definitions. At the end of that time, it will be necessary simply to purchase and insert a new license key.
For detailed step-by-step instructions please read the following articles:
Inserting the license file into avast! Pro Antivirus
Inserting the license file into avast! Internet Security
If the avast! 5.0 rejects purchased license as invalid please proceed as follows:
- Submit a request to resend the license to the e-mail address provided when avast! 5.0 was purchased and try to insert this license into the program.
- If the license insertion fails, uninstall avast! 5.0 using the avast! Uninstall Utility and restart your computer.
- Download and install the appropriate product version of avast! 5.0 related to the purchased license.
- Once again try to insert the license into the avast! 5.0.
avast! 5.0 comes with a number of pre-defined scans installed by default ('Quick scan', 'Full System Scan', 'Removable Media Scan', 'Select folder to scan') but you can also create your own custom defined scans. All these scans can be performed simultaneously. But, if you execute too many pre-defined and/or custom defined scans at the same time, depending on your computer configuration you can observe some system performance degradation.
At various times while your computer is running, messages may be displayed on your screen e.g. when the virus definitions have been updated, when an incoming e-mail is being scanned etc. This can result in full-screen applications (e.g. games) being interrupted as Windows switches from full-screen mode to normal mode when the message appears. You can specify that messages will never be displayed, or will not be displayed if a full-screen application is running.
This is a completely new feature in avast! Pro Antivirus 5.0 and avast! Internet Security 5.0 which allows you to browse the web or run another application in a completely safe environment. This is especially useful when visiting high-risk web sites, whether accidentally or deliberately, as the browser will be completely contained within the avast! Sandbox, preventing any damage to your computer.
The avast! Sandbox can also be used to run any other applications which you think may be suspect - you can run the program inside the sandbox to determine whether or not it is safe while remaining completely protected against any malicious actions that it may try to carry out.
To run an application or to browse the web using the avast! Sandbox, just browse the files on your computer to find the required application e.g. Internet Explorer. The browser or other application will then open in a special window with a red border, indicating that it is being run inside the sandbox.
Also you can further define applications that should always be run in virtualized mode, and trusted applications that should never be virtualized.
avast! Internet Security 5.0 includes a fully integrated antispam module to detect unwanted e-mail.
Spam delivered to your mailbox can result in your mailbox quickly becoming full, and as a result legitimate e-mails may not be received. It can also unnecessarily increase the load on the Mail Server, internet connection, local networks etc.
The avast! Antispam module analyses every incoming e-mail based on various criteria to determine whether is it legitimate. This analysis is based partly on a 'Blacklist' containing the addresses of senders from whom e-mails should always be marked as spam, and a 'Whitelist' which contains the addresses of known and trusted senders. These lists can be found in the antispam settings. For e-mails from senders that are not on either list, a content analysis is also carried out based on the specified scan sensitivity to identify e-mails that should be treated as spam.
In the antispam settings you can also specify how spam e-mails should be marked. This can then be used to create a new rule in your Mail Client, for example to automatically move the marked e-mails to another folder. The avast! Antispam module is effective for messages delivered to e-mail accounts in combination with the Mail Client installed on your computer such as Microsoft Outlook, Outlook Express etc. but not for web based e-mail accounts such as Yahoo, Gmail etc. which usually have their own antispam options.
Web based e-mail services such as Yahoo, Gmail etc. usually have their own security options, because e-mails are received and stored on the remote Mail Server and users access their e-mail accounts remotely via their web browser. In other words, web based e-mail services are like any other website, and if you try to save, download or run a suspicious file from a web based e-mail account, it will be detected by the web shield built into avast! 5.0.
As a result you should not expect to see any scan history in the Mail Shield screen if using a web-based email services. If you have any doubts about the security of your web based e-mail service provider, you can alternatively launch your web browser within the avast! Sandbox and then access your web based e-mail account within this secure virtualized environment.
This situation may be resolved by reducing the heuristic sensitivity. In the antispam settings it is possible to set the scan sensitivity as 'Low', 'Medium' or 'High'. avast! will perform a heuristic analysis of all incoming e-mails to identify potential spam - the heuristic analysis comprises a large number of tests based on typical spam content or behavior and the sensitivity level will determine how many tests would have to be failed for a message to be considered spam. The higher the sensitivity, the higher the "pass mark", therefore the higher the number of e-mails that will fail the heuristic test and will be treated as spam. Reducing the heuristic sensitivity may reduce the number of emails being send to your spam folder, but a result of this may be an increase in the number of spam emails in your inbox.
Yes, the combination of the avast! Antispam and the integrated URL blocking feature in avast! Internet Security 5.0 provides sufficient anti-phishing protection.
avast! Internet Security 5.0 includes a fully integrated firewall which can be controlled directly from the avast! user interface.
The avast! Firewall monitors all communication between your computer and the outside world and blocks unauthorized communication based on a number of 'Allow' and 'Deny' rules. In this way, the firewall can prevent sensitive data from leaving your computer and can also block attempted intrusions by external hackers.
You can also set the application rules governing the network and Internet communication for specific software applications. The firewall will then follow these rules whenever a particular application tries to establish a connection to the Internet or with another network. For detailed step-by-step instructions how to create and manage application rules please read the following article:
Configuring the firewall application rules in avast! Internet Security
You should select the option 'PUBLIC/HIGH RISK ZONE' which is suitable when using your computer to connect to a public network and where you want to ensure the maximum level of security. This is the most secure setting and if selected, no incoming communication will be allowed, effectively making your computer completely invisible to others.
