Notify me only when programs try to make changes to my computer do not dim my desktop will: Notify you when programs try to install software or make changes to your computer. Not freeze other tasks until you respond. Not recommended. Choose this only if it takes a long time to dim the desktop on your computer.
Never notify Disable UAC prompts will: Not notify you when programs try to install software or make changes to your computer. Not recommended due to security concerns.
Secure desktop enabled The User Account Control: Switch to the secure desktop when prompting for elevation policy setting is checked: If the secure desktop is enabled, all elevation requests go to the secure desktop regardless of prompt behavior policy settings for administrators and standard users.
If the secure desktop is not enabled, all elevation requests go to the interactive user's desktop, and the per-user settings for administrators and standard users are used.
The file is then inspected to determine its requested execution level, which is stored in the application manifest for the file. AppCompat The AppCompat database stores information in the application compatibility fix entries for an application. Fusion The Fusion database stores information from application manifests that describe the applications. The manifest schema is updated to add a new requested execution level field.
Installer detection Installer detection detects setup files, which helps prevent installations from being run without the user's knowledge and consent. Kernel Component Description Virtualization Virtualization technology ensures that non-compliant apps do not silently fail to run or fail in a way that the cause cannot be determined. UAC also provides file and registry virtualization and logging for applications that write to protected areas.
File system and registry The per-user file and registry virtualization redirects per-computer registry and file write requests to equivalent per-user locations. Read requests are redirected to the virtualized per-user location first and to the per-computer location second.
The slider will never turn UAC completely off. If you set it to Never notify , it will:. Because system administrators in enterprise environments attempt to secure systems, many line-of-business LOB applications are designed to use only a standard user access token.
As a result, you do not need to replace the majority of apps when UAC is turned on. Windows 10 and Windows 11 include file and registry virtualization technology for apps that are not UAC-compliant and that require an administrator's access token to run correctly. When an administrative apps that is not UAC-compliant attempts to write to a protected folder, such as Program Files, UAC gives the app its own virtualized view of the resource it is attempting to change.
The virtualized copy is maintained in the user's profile. This strategy creates a separate copy of the virtualized file for each user that runs the non-compliant app. Most app tasks operate properly by using virtualization features.
Although virtualization allows a majority of applications to run, it is a short-term fix and not a long-term solution. App developers should modify their apps to be compliant as soon as possible, rather than relying on file, folder, and registry virtualization. Virtualization does not apply to apps that are elevated and run with a full administrative access token.
Virtualization supports only bit apps. Non-elevated bit apps simply receive an access denied message when they attempt to acquire a handle a unique identifier to a Windows object. Native Windows bit apps are required to be compatible with UAC and to write data into the correct locations. Virtualization is disabled if the app includes an app manifest with a requested execution level attribute. An app manifest is an XML file that describes and identifies the shared and private side-by-side assemblies that an app should bind to at run time.
The app manifest includes entries for UAC app compatibility purposes. Administrative apps that include an entry in the app manifest prompt the user for permission to access the user's access token. Some emails give instructions to allow macros or other executable content designed to make it easier for malware to infect your devices.
When you visit malicious or compromised sites, your device can get infected with malware automatically or you can get tricked into downloading and installing malware. See exploits and exploit kits as an example of how some of these sites can automatically install malware to visiting computers. The initial part domain of a website address should represent the company that owns the site you are visiting.
Check the domain for misspellings. For example, malicious sites commonly use domain names that swap the letter O with a zero 0 or the letters L and I with a one 1. If example. Sites that aggressively open popups and display misleading buttons often trick users into accepting content through constant popups or mislabeled buttons. To block malicious websites, use a modern web browser like Microsoft Edge that identifies phishing and malware websites and checks downloads for malware.
You can also report unsafe sites directly to Microsoft. Using pirated content is not only illegal, it can also expose your device to malware.
Sites that offer pirated software and media are also often used to distribute malware when the site is visited. Sometimes pirated software is bundled with malware and other unwanted software when downloaded, including intrusive browser plugins and adware. Users do not openly discuss visits to these sites, so any untoward experience are more likely to stay unreported. To stay safe, download movies, music, and apps from official publisher websites or stores.
Some types of malware spread by copying themselves to USB flash drives or other removable drives. There are malicious individuals that intentionally prepare and distribute infected drives by leaving them in public places for unsuspecting individuals. Only use removable drives that you are familiar with or that come from a trusted source. Avoid opening unfamiliar files you find on suspect drives, including Office and PDF documents and executable files. At the time they are launched, whether inadvertently by a user or automatically, most malware run under the same privileges as the active user.
There are also anti-malware products made by other companies that you can choose from. Running multiple anti-malware apps at the same time can cause your system to be slow or unstable. If you install an anti-malware app from a different company, Microsoft Defender will automatically turn itself off. If you install two anti-malware apps from other companies, however, they might both try to run at the same time.
Don't open email messages from unfamiliar senders, or email attachments that you don't recognize - Many viruses are attached to email messages and will spread as soon as you open the attachment.
It's best not to open any attachment unless it's something you're expecting. For more information see: Protect yourself from phishing. Use a pop-up blocker with your internet browser - Pop-up windows are small browser windows that appear on top of the website you're viewing.
Although most are created by advertisers, they can also contain malicious or unsafe code. A pop-up blocker can prevent some or all of these windows from appearing. The pop-up blocker in Microsoft Edge is turned on by default. If you're using Microsoft Edge, make sure SmartScreen is turned on - SmartScreen in Microsoft Edge helps protect you from phishing and malware attacks by warning you if a website or download location has been reported as unsafe.
For more info, see What is SmartScreen and how can it help protect me? Pay attention to Windows SmartScreen notifications - Be cautious about running unrecognized apps downloaded from the Internet.
Unrecognized apps are more likely to be unsafe. As with any protection plans, if your Windows computer is not receiving regular updates from Microsoft, that computer will be vulnerable to viruses and malware. Microsoft releases special security updates that can help protect your PC. These updates can help prevent viruses and other malware attacks by closing possible security holes.
How to update a Windows 11 computer. Windows Updates is set up to automatically install security and and features updates on your computer. You can also choose to manually install updates at anytime. You Windows computer has two account types: Administrator and local user.
When changes are going to be made to your PC that require administrator-level permission, UAC notifies you and gives you the chance to approve the change.
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