Denial of Service (DoS) attacks cause web servers to become unavailable because of the big amount of requests that max out the server resources. Attackers specifically craft these requests to take the server down. One type of DoS attack is the Slow HTTP POST attack.
(Solved) Installation of one or more roles or features failed. Error 0x800f0831
Windows Server makes it easier to extend the server capabilities by installing new roles and features. You can use Server Manager to install or uninstall new capabilities. Server Manager provides an easy-to-use wizard to guide you through the process. However, you may come across to this error code in some cases: 0x800f0831.
“rzc discover exited with code -2147450749” and “hostpolicy.dll required” errors
We have recently upgrade a .NET Core 2.2 application to 3.1 version. While trying to run it in Visual Studio, we came across “rzc discover exited” and “hostpolicy.dll required” errors:
- In Visual Studio output while trying to run the solution:
rzc discover exited with code -2147450749 - In PowerShell after performing “build run” command:
A fatal error was encountered. The library 'hostpolicy.dll' required to execute the application was not found in [path]
HTTP Error 500.30 – ANCM In-Process Start Failure (Solved)
Visual Studio makes it easy to run your application project by using IIS installed in Windows. You don’t have to explicitly go to IIS Manager and deploy your application there. You can simply click the “Run” (green arrow) icon to view your project on browser.
Child object ‘advancedLogging’ cannot be added to object ‘site’
You can use Web Deploy tool to migrate your IIS websites from one server to another. I have been trying to transfer a site from Windows Server 2008 R2 to Windows Server 2016 server. I came across this error message:
How to use State Server for storing SSRS session info
If you are hosting SSRS environment on multiple IIS servers, you will need to use a common State Server or SQL Server to store session data. In this post, I will share some tips about this scenario.
The server committed a protocol violation (Section=ResponseStatusLine)
In majority of the IT infrastructures, there are network devices such as load balancers, proxies, and firewalls in front of the web servers. These devices may edit requests and responses while transmitting them.
Service-specific error code -2146893818 (Event 7024 Invalid Signature)
IIS Admin Service enables the administration of IIS metabase which stores the configuration of SMTP and FTP services. If you see this service stopped in the Services window, it means that the server is unable to configure SMTP or FTP.
This version requires IIS 7. The setup will now terminate
As Microsoft continues to improve IIS, certain third-party components become incompatible with the new versions. I have recently worked on case where we tried to install an authentication module into a server with IIS 10. It threw this error message:
DIGIPASS Authentication for IIS Basic 3.4.0 Setup Information
This version of DIGIPASS Authentication for IIS Basic requires Microsoft Internet Information Services (IIS) 7. The setup will now terminate