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IIS Support Blog
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5,964

Perfview Command for Capturing Automated High CPU Dumps

Prpillai on Jul 01 2020 03:42 AM
Perfview Command for Capturing Automated High CPU Dumps
2,069

Web page with a PowerApps iframe keeps loading

Nedim on Jun 22 2020 06:59 AM
If a web browser starts loading the web page but it never finishes loading it, check if there is an iframe in the page
7,836

500 Internal Server Error when accessing the root folder

Nedim on Jun 22 2020 06:58 AM
A webpage may display "The page cannot be displayed" error if the user accesses the root folder of the application
14.4K

Event ID 15300 (SSL Certificate Settings deleted)

Nedim on Jun 22 2020 06:54 AM
This error message is displayed in the Event Viewer when the IIS binding is deleted or the certificate is removed
62.8K

404 Page Not Found error even though the page exists

Nedim on Jun 22 2020 06:49 AM
After a new installation of IIS role in a server, the browser may return “404 Page Not Found” error for a new website
34.8K

Reading a FREB log, a Failed Request Tracing: IIS request processing pipeline execution

Pingulea on Apr 30 2020 05:45 AM
Once an HTTP request arrives at IIS, multiple modules participate along the pipeline stages to build a response. How do ...
9,855

ARR authenticating itself to backend with client certificate on re-routing requests

Pingulea on Apr 28 2020 03:35 AM
There are situations where only a known and authenticated reverse-proxy should access an IIS application.
18.3K

IIS Client Certificate Authentication results in 401-Unauthorized for sub-applications

Pingulea on Apr 28 2020 01:55 AM
IIS client certificate mappings must be defined at the site (or server) level, even if they are only used in sub-applica...
10.5K

ARR: change the hostname on re-routing to backend node the requests

Pingulea on Apr 27 2020 08:39 AM
When re-routing requests to backend nodes, ARR can use a custom hostname different from the web farm name, which is the ...
8,605

Publishing Azure Bot Services to MS teams Store/ Publish your Azure Bot Service for Teams

Sai_Teja_Nagamothu on Mar 25 2020 04:02 PM
Test your bot in Teams Create a Teams app package and upload your app to the Teams client for testing. Learn how Publish...
9,820

Use specific processors in IIS (Processor Affinity)

Nedim on Mar 13 2020 01:48 PM
IIS websites use all the available CPU power by default. You can play around the application pool settings if you want t...
1,325

“advancedLogging cannot be added” error

Nedim on Mar 13 2020 01:45 PM
Web Deploy tool helps migrating your IIS websites from one server to another. While trying to transfer a site from Windo...
6,706

ASP.NET Session has expired (SSRS environment)

Nedim on Mar 13 2020 01:43 PM
If you are hosting SSRS environment on multiple IIS servers, you will need to use a common State Server or SQL Server to...
27.4K

Protocol violation (Section=ResponseStatusLine)

Nedim on Mar 13 2020 01:41 PM
Companies use network devices such as load balancers, proxies, and firewalls in front of the web servers. These devices ...
4,059

How to collect dotnet core app dumps from Linux and analyze dumps on Linux

Jason Xu on Feb 11 2020 06:33 PM
You will need a Linux VM to analyze dumps from Linux, so the instructions below included how to create an Linux VM in Az...
2,797

The IIS Management Console Connection Pane doesn't show any sites I have created

michno on Feb 11 2020 09:28 AM
Recently I had an unusual case where customer called in with a problem that he could see none of the web sites in the le...
12K

SameSite in code for your ASP.net applications

pcociuba on Feb 06 2020 10:19 AM
In order to compensate for the fact that older browsers do not understand the SameSite=None attribute on cookies and con...
16.4K

SameSite=Lax in the new world

pcociuba on Feb 06 2020 09:59 AM
In the last installment of this series, we discussed how the SameSite cookie specification functioned when it was introd...
29K

SameSite cookie updates in ASP.net, or how the .Net Framework from December changed my cookie usage.

pcociuba on Feb 06 2020 09:45 AM
The Internet is a constantly changing place, and the standards that govern it change as well. This week, on February 4th...
4,947

Bot Channels Registration: where is the Secret/Password for the Application ID?

Pingulea on Jan 29 2020 03:18 AM
I created a Bot Channel Registration with "Auto create AppID and password". But now how can I get the password; I need i...
6,738

Troubleshooting Performance Problems related to Application Domains reloading

rogheorg on Jan 27 2020 10:40 AM
Throughout my time working on the IIS team I've seen a lot of cases where frequent unloading of the Application Domains ...
11.3K

SSL certificate occasionally disappears from HTTPS binding

Pingulea on Jan 07 2020 02:38 AM
A couple of Metabase compatibility entries referring to SSL may interfere with the server certificates that are used in ...
6,554

Updating DOM elements with JQuery following partial postbacks from Update Panels in ASP.net webforms

pcociuba on Dec 20 2019 02:48 AM
While working on implementing some of functionality on my online favorites manager (www.linqto.me) which I encourage eve...
73.4K

MSVCR71.dll is missing

Nedim on Dec 19 2019 11:05 AM
IIS relies on libraries with functions to host ASP.NET, PHP and other types of web applications. MSVCR71.dll is one of t...
40.8K

Error 2146893818 (Event 7024 Invalid Signature)

Nedim on Dec 19 2019 11:03 AM
When you try to start IIS Admin Service, this error message may be displayed: Windows could not start the IIS Admin Serv...
5,169

0x800f0922 Update IIS-RequestMonitor failed

Nedim on Dec 19 2019 11:01 AM
Several features such as WebSocket Protocol, Tracing or Request Monitor can be installed in IIS server on need basis. I ...

Latest Comments

MattHamrick
in Windows Authentication HTTP Request Flow in IIS on May 16 2024 07:15 AM
@gesown Regarding invalid SSL certs impacting authentication -- SSL cert exchange happens before HTTP, and they generally do not affect each other. If something happens during SSL cert exchange and HTTP doesn't happen, then Windows Auth won't happen either. If you're referring to mutual TLS, where t...
0 Likes
GmarEater
in ASP.NET Core: 503 Server has been shutdown on May 15 2024 09:36 PM
You save me, I had to deliver in few hours and stuck with this error ( I had two builder) thanx a lot
1 Likes
gesown
in Windows Authentication HTTP Request Flow in IIS on May 14 2024 05:12 PM
Also, how does invalid ssl certs impact authentication?
0 Likes
gesown
in Windows Authentication HTTP Request Flow in IIS on May 14 2024 05:11 PM
I am curious how different versions of .net assemblies used for web applications might fail to support http user identity authentication when using windows authentication.
0 Likes
walker786
in HTTP OPTIONS and Default page vulnerabilities on May 07 2024 03:14 AM
0 Likes