The Windows Security user interface has various options. Each of these pages can be opened directly using URL shortcuts, similar to the shell: commands we used to open special folders directly.Read more
windows defender
Windows Security Service Started and then Stopped in Windows 11
After installing the Windows 11 22H2 update, the Windows Security dialog may not launch. It may show a blank page, as shown below:Read more
Fix: Cannot Enable Core Isolation Due to Incompatible Drivers
When you attempt to turn on Memory Integrity in Windows Security, the Windows Security page scans the drivers to check their compatibility with the Core Isolation/Memory Integrity feature. If there are incompatible drivers found, the list of incompatible drivers is shown. You’ll be asked to address the issue before enabling Memory Integrity.Read more
Microsoft Defender Service Error 2 “Cannot Find the File Specified”
In the aftermath of a malware attack and subsequent removal using specialized programs, you may notice that the Microsoft Defender Antivirus service fails to start on your Windows 10 or 11 computer. One of the common errors users encounter is “Error 2” (0x80070002), which denotes that a file is missing.Read more
You’ll need a new app to open this windowsdefender link
After installing the Windows 11 Feature Update, you may notice that the Windows Defender Security settings page can’t be opened. Nothing may happen when you open the Windows Security dashboard, or the following error may occur when you do so:Read more
Windows Defender Service Missing; Security at a glance page is Empty
In the aftermath of malware infection, when you open the Services MMC on a Windows 10 or 11 computer, you may find that the Windows Defender (“Microsoft Defender Antivirus Service”) service is missing from the Services MMC. The Windows Security settings “Security at a glance” page may show up empty as in the following screenshot. … Read more
“PC-Doctor Module” High CPU, Memory, Disk Usage and Slowdown
Occasionally, your system may slow down to a crawl due to the PC-Doctor Module process that runs in the background. When this happens, it can take several seconds to open the Task Manager or any program.
The Task Manager may show that a process named PC-Doctor Module is occupying 100% of CPU and a very high amount of RAM. You may be wondering if PC-Doctor Module is a virus, Malware, or a PUA.Read more
Windows Defender Shows the Same Threat Repeatedly. How to Clear the Protection History
On some Windows 10 and 11 computers, Microsoft Defender Antivirus may repeatedly warn about the same threat, although you’ve taken the necessary action (remediated) on that threat.
When you click “Start actions” after choosing “Remove”, nothing happens. Windows Defender would keep showing that non-existent threat.Read more
Windows Defender “HostsFileHijack” alert appears if Telemetry is blocked
Since July last week, Windows Defender started issuing Win32/HostsFileHijack “potentially unwanted behavior” alerts if you had blocked Microsoft’s Telemetry servers using the HOSTS file.
Out of the SettingsModifier:Win32/HostsFileHijack cases reported online, the earliest one was reported at the Microsoft Answers forums where the user stated:
I’m getting a serious “potentially unwanted” message. I have the current Windows 10 2004 (1904.388) and only Defender as permanent protection.
How is that to evaluate, since nothing has changed at my hosts, I know that. Or is this a false positive message? A second check with AdwCleaner or Malwarebytes or SUPERAntiSpyware shows no infection.
“HostsFileHijack” alert if Telemetry is blocked
After inspecting the HOSTS file from that system, it was observed that the user had added Microsoft Telemetry servers to the HOSTS file and routed it to 0.0.0.0 (known as “null-routing”) to block those addresses. Here is the list of telemetry addresses null-routed by that user.Read more