This guided walk-through provides steps to fix problems with Windows Updates for Windows 8. For help with Windows Update issues in Windows 10, see Troubleshoot problems updating Windows 10 instead. A common cause of errors is inadequate drive space. If you need help freeing up drive space, see Tips to free up drive space on your PC. The steps in this guided walk-through should help with all Windows Update errors and other issues— you don't need to search for the specific error to solve it.
The steps provided here should help fix any errors that come up during the Windows Update process. What does this guided walk-through do? 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. Microsoft Defender Antivirus has encountered an error trying to remove history of malware and other potentially unwanted software.
Microsoft Defender Antivirus has detected a suspicious behavior. Microsoft Defender Antivirus has detected malware or other potentially unwanted software. No action is required. Microsoft Defender Antivirus can suspend and take routine action on this threat.
If you want to remove the threat manually, in the Microsoft Defender Antivirus interface, click Clean Computer. Microsoft Defender Antivirus has encountered a non-critical error when taking action on malware or other potentially unwanted software. No action is necessary. Microsoft Defender Antivirus failed to complete a task related to the malware remediation.
This is not a critical failure. The antimalware platform encountered a critical error when trying to take action on malware or other potentially unwanted software.
That said, here are the steps you should follow:. The steps above should initiate a fresh Windows Defender update. Once the process is done, check if the error still persists.
If you notice that Defender itself is misbehaving or stalling, then there are certain steps you should follow. It is true that Windows Defender is a built-in component of the Windows 10 shell. However, it can still be disabled when there is a third-party antivirus installed in the computer.
As such, we advise you to check the dedicated service for Windows Defender and ensure that it is set to start automatically. Simply follow these steps:. Like any other program, you can manually download the latest definition for Windows 10 and install it on your computer. Needless to say, you can also opt to manually update Windows Defender.
Just follow the instructions below:. Automatic updates. To help ensure your antimalware solution detects the latest threats, get updates automatically as part of Windows Update. If you are having problems with Windows Update, use the troubleshooter. If you don't already use Microsoft Defender Antivirus, learn how to turn it on.
Trigger an update. A manually triggered update immediately downloads and applies the latest security intelligence. This process might also address problems with automatic updates. Microsoft Defender Antivirus and other Microsoft antimalware solutions provide a way to manually trigger an update.
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