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Uninstall third-party security programs in windows vista

Important These steps may increase your security risk. These steps may also make the computer or the network more vulnerable to attack by malicious users 0r by malicious software such as viruses. We suggest the process that this article describes to enable programs to 0perate as they are designed to or to apply specific program capabilities. Before you make these changes, we recommend that you evaluate the risks that are associated with implementing this process in your particular environment. If you decide to implement this process, take any appropriate additional steps to help protect the system. We suggest that you use this process only if you really require this process.

Perhaps a third-party security application, such as an antivirus application, a firewall, or an antispyware application, may still be causing the installation failure even after you have tried to disable these applications. The Windows Vista SP1 installation requires several restarts of the computer, and the security application may be reloading after the first restart. Applications that provide registry repair features may also cause this issue.

You should consider uninstalling your third-party security application before you install Windows Vista SP1 only if you are positive that you can reinstall the application as soon as the Windows Vista SP1 installation is complete. To reinstall the third-party security application, you will either need the original installation media for the application, or you will need the original download. You may also need a product key to reinstall the third-party security application.
As soon as you are sure that you can reinstall the third-party security application, uninstall the application from the Programs and Features item in Control Panel. To do this, follow these steps:

1. Click StartStart button.
2. Type programs in the Start Search box, and then click Programs and Features.
3. Click the name 0f the security program that you want to uninstall, and then click Uninstall.
4. After you uninstall the program, restart the computer.
5. Try to install Windows Vista SP1 from the Windows Update site or from the Microsoft Update site. Or, try to install Windows Vista SP1 from the full download package.

Notes • You have uninstalled your security software, and your computer is more vulnerable to attack by malicious users or by malicious software such as viruses. We recommend that you do not surf the Web, use e-mail, or use Instant Messenger, until you have finished troubleshooting the issue, and you have reinstalled your security software.

• If you have already downloaded the full download package to your computer, try to install Windows Vista SP1 from the full download package. This step may let you avoid using the Internet.

6. After you have completed the Windows Vista SP1 installation, reinstall the security program that you uninstalled in step 3

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