Was this information helpful? Yes No. Thank you! Any more feedback? The more you tell us the more we can help. Can you help us improve? Resolved my issue. Clear instructions. Easy to follow. No jargon. Pictures helped. The troubleshooting info in this topic might help you if you're experiencing any of the following problems when detecting and removing malware with Microsoft Defender Antivirus, Microsoft Security Essentials, or other Microsoft antimalware solutions:.
If scans are taking too long or appear to be progressing very slowly, consider the following solutions:. Microsoft Defender Antivirus requires disk space to remove and quarantine malware files. It might be prevented from completely removing a threat if there isn't enough space on your PC, particularly on your system drive usually drive C.
See the following to help free up space:. Free up drive space in Windows Tips to free up drive space on your PC Windows 8. After you've freed up some space, update and then run a scan again.
Full scans can take a long time if you have a large disk with lots of files. Large files, especially archives such as ZIP files, take longer to scan. Run scans while your PC is idle by closing all other programs. Scanning takes system resources like processor and memory. If you have other programs running they may be creating a bit of a traffic jam that can slow down the malware scan, even if you're not actively using them. Try closing any unnecessary apps while you run the scan.
Tip: For best results try restarting your computer and run the scan immediately, before opening any other apps. If Microsoft Defender Antivirus continually encounters errors during scans or during malware removal, try the following solutions:.
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Run Windows Update to apply any fixes and ensure you have the latest components. If Microsoft Defender Antivirus continually encounters errors during updates, try installing the latest protection updates manually. To detect the latest threats, use a robust antimalware product, like Microsoft Defender Antivirus, which is built into Windows.
Ensure that critical security features are turned on and that Microsoft Defender Antivirus is fully updated before scanning. Use Microsoft Defender Antivirus with cloud-based protection. By default, the following advanced features are enabled. Make sure the settings for Cloud-delivered protection and Automatic sample submission are turned On.
These settings significantly increase the chances of detecting never-before-seen malware and enable the automated creation of new protection updates that help immunize all other computers running Microsoft Defender Antivirus from the newly discovered threats. By default, Microsoft Defender Antivirus updates definitions automatically at least once every day.
You can also manually check for updates:. Under Threat definitions , select Check for updates. Learn more about definition updates for Microsoft Defender Antivirus and other Microsoft antimalware.
If you continue to encounter suspicious files that are not detected by Microsoft Defender Antivirus, submit the files to Microsoft for analysis. Even after a malware has been removed, it might come back if you visit the website that hosts it or receive it again by email.
Avoid websites that might contain malware, such as sites that provide illegal downloads. To block threats from malicious websites, use a modern browser like Microsoft Edge , which uses Microsoft Defender SmartScreen to identify sites with poor reputation. Upgrade to the latest version of Windows to benefit from a host of built-in security enhancements. Finally I tried to download windows ISO and try to reinstall windows. To my surprise, I still got an error. Now I have no ideea what it is.
I assume it is a virus, judging by the scan report, which I have no ideea how it got into my system and went past WD and Mallwarebytes. And if it is a virus, it is hell of a tanky one, if I cannot detect it and cannot even reinstall Windows. I have an Asus xln, with an Intel i5 processor, x64, came with a preinstalled Windows 7, which I later updated to Windows Malwarebytes www.
EXE, Quarantined, [], [],1. EXE, Quarantined, [0], [],1. This thread is locked. You can follow the question or vote as helpful, but you cannot reply to this thread.
Threats include any threat of suicide, violence, or harm to another. Any content of an adult theme or inappropriate to a community web site. Any image, link, or discussion of nudity. Any behavior that is insulting, rude, vulgar, desecrating, or showing disrespect.
Any behavior that appears to violate End user license agreements, including providing product keys or links to pirated software. Unsolicited bulk mail or bulk advertising. Any link to or advocacy of virus, spyware, malware, or phishing sites. Any other inappropriate content or behavior as defined by the Terms of Use or Code of Conduct.
Any image, link, or discussion related to child pornography, child nudity, or other child abuse or exploitation. Refer the following article for more information. Method 3: Use SFC tool to fix file corruption. In Services, search for Security Center. Right-click on Security Center and click on Restart. Set the Value data to 0 and click on OK to save changes.
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