How to update anti virus withoud activation key?

Two of the more easy, reliable and free anti-virus software you can download are:
AVAST
ESET

Either one of them will always guard every aspect of your computer and online activity. You MUST be online for any anti-virus software to update it's engine and virus database regularly. Also, MALWAREBYTES is a free anti-malware that guards against other kinds of dangerous computer bugs, and works very well.
Once you've updated whatever anti-virus software you have, then run a complete scan of all your drives and put all viruses into quarantine or repair the files, or remove the nasties completely.

if ur referring to the activation key then u will have to get it legally through the anti-virus company that sell the software

iKaspersky Anti-Virus 2010 It is recommended to close all applications before the installation.
Before you begin to install Kaspersky Anti-Virus 2010 on your computer, make sure that you have removed (uninstalled) your previous antivirus software.
If you are installing using the Kaspersky Anti-Virus 2010 CD, please skip to Step 2. If you have purchased your software online, follow Step 1 to download it.
Click the download link provided in your order email to begin the download process. You will be asked to Run, Save or Cancel the download. Click Save.

• The web browser will ask you where to save the file. Select where you want to locate the file and click the Save button.
• The download process will begin, and depending on the speed of your Internet connection can take up to an hour.
• When the download completes, click Run.
• You may receive a warning that the publisher could not be verified. Click Run.

Step 2 - Install Process:

• You will briefly see the install process copy the installation files to your computer. Wait for the process to finish.
• The install process will check if there is a newer version online and download it if needed.
• Wait a few seconds. The Setup Wizard will open.
• In the welcome window of the Setup Wizard you can choose one of the following types of installation:
  • Express installation - full program installation with recommended by Kaspersky Lab experts settings (Custom installation in the left lower corner is not checked).
  • Custom installation - installation with the possibility to choose which program features to install (Custom installation in the left lower corner is checked). You will be able also to activate the application by special wizard. It is recommended for advanced users.
• In order to start the Express installation click the Next button.
• Read the license agreement. If you agree with all the terms, then click the I agree button. The installation continues. In order to stop the installation click Cancel.
• The Setup Wizard offers to participate in Kaspersky Security Network. If you participate in the program, then Kaspersky Lab will receive information about new threats, detected on your computer, system information and send unique identification which is specified for your computer by Kaspersky Anti-Virus. Your personal data is not collected. Read the Data Collection Statement about using Kaspersky Security Network. If you agree with all the terms, check I accept the terms of participation in Kaspersky Security Network. Click the Install button. The installation continues.
• The install process copies files and adds registry values. Wait until the process completes.

You may see the following notification from the Windows Security Center that there are problems with your computer:

This is normal and will automatically resolve itself after the process completes. The Windows Security Center messages will go away when Kaspersky Anti-Virus will be updated and have the latest databases.
Step 3 - Configuration Wizard:
Having copied the files the Setup Wizard offers to activate Kaspersky Anti-Virus 2010. You will be offered the following options of activation:

• Activate commercial license - a 20-digit activation code should be entered (e.g. XXXXX-XXXXX-XXXXX-XXXXX). Your computer should be connected to the Internet to activate the product. The Setup Wizard will download and install a key file automatically.
• Activate trial license. The Setup Wizard will download and install a key file which is 30 days valid. Your computer should be connected to the Internet to activate the product. Trial version is fully-functioning, however when a trial period expires the anti-virus databases will not be updated.

If the option Activate trial license is missed, it means the trial version a) was already installed or b) is installed now.

• Activate later. If you choose this option, the Kaspersky Anti-Virus activation stage will be skipped. The application will be installed on your computer, all its options will be available to you, except for the update.

In order to activate a commercial version of Kaspersky Anti-Virus 2010, perform the following actions:

• select Activate commercial license.
• In the field Enter the activation code enter the activation code you obtained when purchasing the license. An activation code should be entered from the keyboard in Latin ONLY without any hyphens. The program calculates the number of entered symbols and automatically adds a hyphen where necessary.

If you are not asked to activate, the wizard has detected your existing valid license.

• The Setup Wizard will connect with the Kaspersky Lab server and will download a license key file. Please, wait while the wizard activates your Kaspersky Anti-Virus 2010.
• After the license is activated, you will see the License type and Expiration date. Click Next.
• The installation and activation processes are now complete. Click Finish to open Kaspersky Anti-Virus 2010.

You may also refer to the product manual for Kaspersky Anti-Virus 2010, by clicking on the following link :-
http://docs.kaspersky-labs.com/english/kav2010_en.pdf

using key for a product you did not purchase may not work cause you will have to connect to internet to verify the key as geniune. i can provide you will one but will rather give you the links to get them.here is a link to my some of my files. look for the file that starts with the word windows 7 and download that. unpack it (which you will have to choose a place to extract to), turn off any anti-virus before extracting and note that this file is very clean yet and anti-virus like avg which always reports such files as virus will delete it. this file will only remove the windows activation box which means that you will never have to activate again but the sad aspect of such softwares which activate windows will make microsoft report windows 7 as not geniune during update. so after using it you may have to avoid updating windows but you can update your anti-virus and use without any problem. it works for me so it should work for you too. there are other files in this folder of mine so feel free to download any if you need any software which i will be updating with more files.

In order to protect your computer from different viruses and other malicious things that can get in to your computer is to install some security software like anti virus and anti malware software. For a good anti virus that is free you can go to Avast or Avira they are free and do always update the database with the latest update and can protect your computer always.
For additional security on your computer you can also use this software for malware removal its called Malwarebytes. All of this software are free and they work great for me and you can download them from download.com.

You must buy the product to get an activation key. Have you purchased it?

Multiple anti-virus programs on a computer conflict with each other, as well as installation may fail when trying to install one Anti-virus program when another one is still on the computer.

Download Avast
Disable your internet connection, or unplug the ethernet cable
Uninstall McAfee
Install Avast
Hook your internet back up
Use your reg key and update Avast.

You just don't want an unsecured computer with an active internet connection even during the short period of time between uninstalling the old one and installing the new one

hi..the reason to this problem may depend
upon the type of anti-virus u are using.once after
installing the anti-virus u have to keep on updating
it to a new update every day.This will solve ur problem
of slowing down.
check it out..
thank u..

Bro, my suggestion is, you uninstall you Norton Anti-virus including the Symantec folder installation then install one that is free but can still perform as good as Norton. I am not saying NOrton Anti-Virus is a bad program but, it is systemic and slows down your computer a bit. Norton is a great product everybody kows that !!!! What i can share with you is that, try downloading AVG free or AVAST home edition for which, if you are connected to your net, they regularly send updates to your computer as long as you are registered and your key is up to date. If your Norton Anti-virus is notactivating, it only means one thing, it's not updated.

I need a registration code for #357952007752745 plz, plz... send it to me.