Questions tagged [winhttp]

WinHTTP is a component of Microsoft Windows that provides a common interface to access resources through HTTP.

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Win32/.NET applications and browsers (but not CURL) suddenly unable to make HTTP requests on AWS VM

Environment: AWS / Microsoft Windows Server 2019 VM A few .NET applications are running on a VM (as windows services), which make various HTTP requests. One of these is also using MQTT (via MQTTnet) ...
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38 views

Does WinHTTP know it's running as a service?

My application uses a closed-source library that in turn uses WinHTTP to download files. According to Wireshark, my (IIS) web server returns a normal cache header with these files. Eg: HTTP/1.1 200 ...
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1answer
379 views

Winhttp Multiple Proxy Servers

Is there a way to set multiple proxy servers via winhttp? I have an application that looks at the registry key set by winhttp for the proxy server and I can confirm it's working fine when I set it via ...
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1answer
1k views

How can I enable WinHTTP trace logging in Server 2012 R2 for viewing raw HTTP commands and application details?

I have an application running on a Windows Server 2012 R2 system and the app leverages winHTTP for various network requests. It's not able to communicate with another server on the network and I ...
2
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0answers
3k views

consequences of disabling 'The WinHTTP Web Proxy Auto-Discovery Service ' [duplicate]

I am dba responsible for several sql boxes running sql2008 standard on Windows 2008r2 datacentre Servers. Every now and again I see a spike in cpu which coincides with the event "The WinHTTP Web ...
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1answer
3k views

ARR troubleshooting 502.3 / WinHttp tracing on Server 2012

I have the following scenario: 3 windows server 2012 virtual servers, all with IIS 8: 1 server with Application Request Routing 3 2 servers with the web applications that the ARR server routes to I ...
2
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3answers
11k views

How do I apply WinHTTP proxy settings domain-wide?

We're already configuring Internet Explorer proxy settings through group policy and it works great. Sadly, I've recently run into multiple issues where those settings are ignored by certain services. ...
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1answer
1k views

How can I easily test connectivity to external sources with WinHTTP?

I've got an server application that uses Winhttp to fetch information from an external source. Occasionally, I'll need to troubleshoot connectivity issues and I'd like an easy way to test connections ...
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1answer
63k views

How to Grant IIS 7.5 access to a certificate in certificate store?

In Windows 2003 it was simple to do and one could use the winhttpcertcfg.exe (download) to give "NETWORK SERVICE" account access to a certificate. I'm now using Windows Server 2008 R2 with IIS 7.5 ...
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2answers
1k views

Where to obtain the WinHttp 5.1 redistributable?

i'm trying to find the redistributable for Microsoft WinHttp 5.1. Some older Windows 2000 machines in the enterprise do not have it. Microsoft's website says: Redistribution WinHTTP 5.1 is ...