Hi. TMS Webserver is producing the following MadExcept error when I'm loading a webcore application that has been running perfectly fine until today when my PC was restarted:
http server api error. the request is not supported
FYI the server starts successfully on the TMS WebServer. I've attached the MadExcept report.
bugreport.txt (75.1 KB)
BTW, this is also happening with a blank project.
The error we see is:
"Could not add the following Url to the server. Be sure that you have reserved the Url in Http.Sys with proper permissions. Url: http://+:8000/SMProDashboard Error: Access is denied"
Try using the tool \Bin\Win32\TMSHttpConfig.exe and check if URL http://+8000/ is registered.
Yes. It IS registered for "Everyone"
Today, after cumulative Windows 11 update I started to receive the same error.
function HttpReceiveHttpRequest in the loop THttpSysSession.GetContext
returns error 50 after receiving HTTP request from any client
The strange thing is the HTTPSys server starts with no error
2 hours before the Windows update everything worked fine.
The error occurs in all my HTTPsys based servers, also in the demo apps
I should add that URLS are all properly registered via TMSHttpConfig and are listed in the registered URLS pane
Additional info - the very same modules work properly on another (WIN 10) machine
I was just about to write about the update. I confirm that today my Windows 11 was updated with the 2025-10 Cumulative Update for Windows 11 Version 24H2 for x64-based Systems (KB5066835) (26100.6899)
That's it! During the update, two additional updates were installed for NET Framework 3.5 and 4.8.1 (KB5066131) and .NET Security Update for x64 Client (KB5068331).
Though I think that the major problem is the cumulative Windows update
Unfortunately, unistalling the update did not solve the issue 
Uninstall both KB5066835 and KB5065789. It did it for me!!
Microsoft is working on it, some hints are here
Is the problem fixed with a new Windows update?
It is fixed