Windows 10 und 11: So aktiviert ihr den Malware-Schutz im Microsoft Defender (2024)

FAQs

Is the Windows Defender alert real or fake? ›

The Windows Defender warning you see on the browser is a scam, identified and exposed by security professionals. Illegitimate actors are using this scam to gain valuable information about the victims, such as bank and personal details.

In third-party testing, Microsoft Defender Antivirus showed itself to be just as effective at detecting malware threats as other free antivirus solutions, though in our own testing it did throw up a few false positives.

Microsoft Defender Antivirus is a powerful tool that finds and removes malware from your PC. Here's how to use it in Windows 10 or 11 to scan your PC. Important: Before you use Microsoft Defender Offline, make sure to save any open files and close apps and programs. Open your Windows Security settings.

They may also put your browser in full screen mode and display pop-up messages that won't go away, apparently locking your browser. These fake error messages aim to scare you into calling their "technical support hotline". Important: Microsoft error and warning messages never include phone numbers.

Microsoft Defender's real-time anti-malware protection runs whenever your device is on, keeping an eye out for malicious activity. Microsoft Defender will also run quick scans of your device on a daily basis, in case anything manages to elude the real-time protection.

Do you really need antivirus for Windows 10? You do need an antivirus for Windows 10, even though it comes with Microsoft Defender Antivirus. That's because this software lacks endpoint protection and response plus automated investigation and remediation.

If you work with sensitive data or files, there's always a possibility of encountering sophisticated malware that might evade built-in defenses. Is antivirus software necessary on Windows 11 devices? Not for general use, but it can come in handy for those with specific security concerns or who handle sensitive data.

Cons of Windows Defender:

Limited protection against advanced threats: While Windows Defender is effective against common malware and viruses, it may not provide adequate protection against more advanced and persistent threats, such as advanced persistent threats (APTs) or ransomware.

your browser's home page suddenly changed. the search engine your browser opens when you click "search" has been changed. certain keys fail to work in your browser (e.g., the tab key doesn't work when you are moving to the next field within a form) random Windows error messages begin to appear.

What is Microsoft's warning that a computer is infected? ›

It operates through web browsers to deceive users into believing that Microsoft has identified an infection and locked their computer. The scam prompts users to call a provided phone number for assistance. However, because these error messages are fake, calling any numbers listed is not advisable.

How we alert you to unusual activity. If there was an unusual sign-in attempt for your account, you'll get an email or text message. We'll send a message to all your alternate contact methods. To help protect your account, we'll need you to provide a security code from one of these contacts.

A hard reset of your device will generally be effective in removing malware and spyware from your device – but it's not 100% guaranteed to eliminate threats. If a virus has infected your device's recovery partition system files, used to restore factory defaults, then it won't be removed.

Can Windows Defender remove Trojans? Windows Defender cannot remove all Trojans from your device. There may be additional steps you have to take to remove them. Make sure Windows Defender performs a virus scan.

Resolution: Yes, Windows Defender should be deactivated when using Email and Server Security or Elements Endpoint Protection. Multiple Anti-Virus products running at the same time may cause conflicts.

Why am I getting fake virus pop-ups? Fake virus alerts often stem from malicious websites or potentially unwanted programs (PUAs). These programs redirect you to these pop-ups, aiming to trick you into taking actions that compromise your security.

Legitimate security warnings from Windows Defender will not ask you to call a phone number. Here are steps you should take: Do Not Call the Number: This is likely a scam designed to get money or personal information from you.

Security alerts are the notifications generated by Defender for Cloud's workload protection plans when threats are identified in your Azure, hybrid, or multicloud environments. Security alerts are triggered by advanced detections available when you enable Defender plans for specific resource types.