Windows Defender

Whenever i start my pc a task called brhost.exe runs everytime and uses around 30% of my cpu , and i have to use task manager to close the task everytime i start my pc.It is not detected by windows defender as a virus so im not sure exactly what this is , but im pretty sure its not supposed to...

When I press check for updates it doesn’t show any results just the bar then returns back to normal and allows me to press check for updates again. Sometimes it’ll give an error and say protection definition update failed. Can someone help me solve this?

I have windows defender and avast antivirus running at the same time and I want to know if that is a problem, or should I disable windows defender?

I have Windows Defender. Is that all I need? How do I make sure I have the best protection for my laptop?

Is this virus? I just removed a virus from my PC and it seems that Windows Defender can't do anything about it so I installed an advanced antivirus removal tool which worked and my PC seems to be running very slow so I rescan and restarted and finally the virus is gone and my PC is running fast...

Paid version of malwarebytes dissapeared. any clues as to how to find it. does is have any connection to Windows defender.

"Bitdefender and Windows Defender both active at the same time" Was a previous post, no one answered this question, whether one should and how to disable Windows Defender if it interferes with Bitdefender.

Cant access files directly(Explorer.exe doesn't work),windows defender service wont start, troubleshooter doesn't work. But files do open with safe mode, unsure what to do have tried quite a bit with no luck. I don't have a restore point either.

So i have been trying to make my pc as fast as possible lately and i've noticed windows defender taking up about 20% of my cpu resources. I thought this was insane so i switched to Avast and it used pretty much the same amount. Are there any other options that wont hog so much resources?

So I recently upgraded to Avast Internet Security and was wondering if I could disable Windows Defender. Although Avast says everything is running, Windows tells me I have no virus protection and should re-enable Defender. In the control panel under security and virus protection, I can view...

Howdy, Last night Windows Defender gave me an alert that it had detected the Skeeyah malware. I've actually had this malware before on another system, and Windows Defender was able to detect it but not able to remove it. In this case though, Defender seemed to immediately quarantine and remove...

Hey, I have had my PC for a while and it came with McAfee antivirus. Should I just ditch it and use Windows Defender instead? I have Malwarebytes too. (Great software, unlike McAfee) Thanks for any advice!

http://puu.sh/yahkC/fe1da6fcdd.png As you can see in the screen clip, there's this "Windows Process Manager" thing with multiple "clients" running in the background and it consumes a huge amount of RAM and processing power. http://puu.sh/yahBg/aaf2bebc2b.png There are multiple instances that can...

Ransomware has, as of recently, become one of the most lucrative types cyberattacks to hit the World Wide Web. These past couple of years have seen the number of ransomware attacks grow in frequency and sophistication. This type of cyberattack works by infecting users’ PCs and denying them...

so i currently have bitdefender and it block a game access to something and so i lost all my progress i've had bad experience with other anti virus software so i just wanna uninstall bitdefender and just use windows defender i will keep malware bytes though but is that good enough? i don't do...

My laptop recently got the Behavior:Win32/Powemet.B!attk trojan from a flashdrive from my friend. When I plugged the flashdrive in, Windows Defender Antivirus immediately detected it. My laptop has now has the trojan but Windows Defender quarantines it every time it boots up. It's getting...

Hello I currently have Malwarebytes free version and I just ran a scan and it detected one malware. The following is extracted straight from the log file "File: 1 Generic.Malware/Suspicious, C:\PROGRAMDATA\MICROSOFT\WINDOWS...

So I don't know what it is, but all of my stuff turned into white pages with red and blue blocks in them. First it was the 0_DECRYPT_FILES thing, then my extreme lag, now the pages. I think I got a virus that just implanted itself somehow. I didn't even dow blows anything recently. I can't open...

I bought a PC today (it came with Windows 10 Home). When I scanned it with Windows Defender I noticed that there is an exclusion for KMSAutoS. It's located in C:\ProgramData\KMSAutoS. Is it harmful? Where is it from? Thank you!

OS : Windows 10. Latest Update. Defendes says I have a virus, but I removed it. It says about something non existent. I click on "remove virus", but nothing happens. Is there any options to reset Defender?