Download system defend antivirus 2011

If this is an unexpected event, you should review the settings as this may be the result of malware. Description: Microsoft Defender Antivirus engine has been terminated due to an unexpected error. For antimalware, antivirus and spyware, at an elevated command prompt, type net stop msmpsvc , and then type net start msmpsvc to restart the antimalware engine. If it fails in the same way, look up the error code by accessing the Microsoft Support Site and entering the error number in the Search box, and contact Microsoft Technical Support.

User action: The Microsoft Defender Antivirus client engine stopped due to an unexpected error. To troubleshoot this event: Run the scan again. Description: Microsoft Defender Antivirus scanning for malware and other potentially unwanted software has been enabled. Description: Microsoft Defender Antivirus scanning for malware and other potentially unwanted software is disabled. Description: Microsoft Defender Antivirus scanning for viruses has been enabled.

Description: Microsoft Defender Antivirus scanning for viruses is disabled. Description: Microsoft Defender Antivirus has entered a grace period and will soon expire. After expiration, this program will disable protection against viruses, spyware, and other potentially unwanted software. Description: Microsoft Defender Antivirus grace period has expired. Protection against viruses, spyware, and other potentially unwanted software is disabled.

If Microsoft Defender Antivirus experiences any issues it will usually give you an error code to help you troubleshoot the issue. Most often an error means there was a problem installing an update. This section provides the following information about Microsoft Defender Antivirus client errors. Use the information in these tables to help troubleshoot Microsoft Defender Antivirus error codes. The following error codes are used during internal testing of Microsoft Defender Antivirus.

If you see these errors, you can try to update definitions and force a rescan directly on the endpoint. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Is this page helpful?

Please rate your experience Yes No. Any additional feedback? Tip You can also visit the Microsoft Defender for Endpoint demo website at demo. Submit and view feedback for This product This page. View all page feedback. In this article. The antivirus client encountered an error, and the current scan has stopped. The scan might fail due to a client-side issue. This event record includes the scan ID, type of scan Microsoft Defender Antivirus, antispyware, antimalware , scan parameters, the user that started the scan, the error code, and a description of the error.

Primarily used to protect scripts PowerShell, VBS , though it can be invoked by third parties as well. The antimalware platform performed an action to protect your system from malware or other potentially unwanted software.

Microsoft Defender Antivirus has taken action to protect this machine from malware or other potentially unwanted software. The antimalware platform attempted to perform an action to protect your system from malware or other potentially unwanted software, but the action failed. Microsoft Defender Antivirus has encountered an error when taking action on malware or other potentially unwanted software.

Microsoft Defender Antivirus has restored an item from quarantine. Microsoft Defender Antivirus has encountered an error trying to restore an item from quarantine. Microsoft Defender Antivirus has deleted an item from quarantine. Microsoft Defender Antivirus has encountered an error trying to delete an item from quarantine. The antimalware platform deleted history of malware and other potentially unwanted software.

Microsoft Defender Antivirus has removed history of malware and other potentially unwanted software. Time: The time when the event occurred, for example when the history is purged.

This parameter is not used in threat events so that there is no confusion regarding whether it is remediation time or infection time. For those, we specifically call them as Action Time or Detection Time. The antimalware platform could not delete history of malware and other potentially unwanted software. Remove viruses from your system by restoring clean versions of infected files. Returnil Virtual System Lite Free to try. Remove PC infections when restarting your machine.

Advanced SystemCare Ultimate Free to try. Shield your computers from malicious virus disruption and speed up overall system performance. Quick Heal Total Security Free to try. Protect your PC from various Internet or network-based threats. Solver for Excel Free. Solver module for Microsoft Excel ZoneAlarm Free Firewall Free. Protect your PC and your Online privacy with a powerful firewall from cyber attacks. Next-generation antivirus and malware defense. Tracking prevention. Forget your passwords.

With Windows Hello, logging in just takes a glance with your face or a scan of your fingerprint. Tracking prevention helps you manage how websites track you and gives you control over your privacy settings. Windows PCs can automatically backup precious files to the cloud in OneDrive—allowing for selected files to be made recoverable in the event of a cyberattack.

Stay connected with your loved ones, develop stronger safety habits, and create a safer online space with the Microsoft Family Safety app. Built-in, routinely updated, and at no extra cost to you. Windows Hello allows for more secure and personal sign-ins with biometrics, like your face or fingerprint. See screenshots, read the latest customer reviews, and compare ratings for Microsoft Defender Original by design.

Shop now. Follow Microsoft. Download the Microsoft Defender for Endpoint client Microsoft Defender update for Windows operating system Where to download the official windows defender Latest security intelligence updates for Microsoft