Connection Refused at TCP/IP Level
Guys, i have a web application running on Windows 2025. Occasionally, the application experiences bursts of over 500 simultaneous connections. Even though, the server showing less than 10% CPU utilization and about 75% of RAM still available, I am encountering "connection refused" errors. I can see Windows Performance counter TCPv4 / Connection Failures change when this happens. There is no antivirus deployed during my test, and Windows defender is off. i have seen similar issues on Windows 2019 and 2022 also. I suspected SynAttack detection, but the TCP diagnostic counters for SynAttack detection dont know any values. It appears to me that there is some Windows OS limitation that causes this issue. Does anybody encounter this situation before?Windows Research Kernel Bring it Back!
I think it is time to revive the Windows Research Kernel! We need the community to be able to understand what is going on without letting everything out of the bag. The last version available was v1.2 which was based off of the kernel for Windows XP and Windows Server 2003 SP2. We need a modern release for development, education, and security research. Who is with me?
Automatic installation of Roots Updates
You can use the registry parameter to redirect the source of root certificate updates: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\AutoUpdate "RootDirURL"="d:\......." Is it possible to automatically distribute certificates of intermediate certification authorities in this way?
ACPI EC OpRegion location
Hello, the ACPI specification defines OpRegions for ACPI bytecode to interact with devices, one suche device being the Embedded Controller. After looking at some example ACPI tables, it seems that Embedded Controller OpRegions can be defined anywhere inside the ACPI namespace, and not just inside the Embeeded Controller device scope. What is the Windows kernel policy for such OpRegions? Which Embedded Controller will be used to handle them (if any)? Thanks, Armin Wolf
Can't sign kernel drivers for Windows 11 & 10
Hi, We recently purchased an EV certificate to sign our software kernel driver, however, when trying to load it in Windows 10 it fails with code 0x800B010C aka CERT_E_REVOKED - A certificate was explicitly revoked by its issuer. We checked the driver with "signtool verify /v /all /pa" as suggested by our cert provider and everything is still valid. We followed these instructions https://docs.microsoft.com/en-us/windows-hardware/drivers/dashboard/attestation-signing-a-kernel-driver-for-public-release We've also tried contacting Microsoft's dev support by MS closed it down recently and they're not replying anymore... Any help would be appreciated, A.
How to open a url in Edge WebView2 control within mmc instead of old Internet explorer?
Can we replace old IWebBrowser2 with IWebView2 controls in mmc so that websites open using new Edge WebView2 instead of old internet Explorer. I want the website to open within mmc and not outside in a popup new window. Is there any code that I can refer to achieve this? Or any change in registry settings to help achieve this? Note: I tried the webview2 in win32 apps in c++ sample code provided on Microsoft's website which opens webview2 component in a new window. But that when I tried to integrate the same with mmc snapin it did not work.
